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Retevis Ailunce HA1G GMRS IP67 Handheld Review

Retevis recently contacted me and asked if I would review their new Ailunce HA1G GMRS handheld radio. Of course, I can't turn down an opportunity to play with a new radio! Here's a deep dive into this new radio, highlighting the major features.

The first thing to know is that the HA1G is dust proof and water proof as indicated by the IP67 rating. This rating means that it can survive submerged in 1 meter of water for 30 minutes. I have not tested this rating yet, but I have no doubt that it is valid after testing another radio from Retevis with a similar rating that survived the Pacific Ocean surf. The HA1G comes with all of the typical accessories that you expect. The package I received did not come with an external speaker/mic, but it includes the typical desk charger, programming cable, USB cable, belt clip, etc.


You don't need to use the desktop charger to charge battery because the battery has a USB-C port. Because this port is attached to the battery, it is only used for charging and not programming. Also, my tests found that using a PD (Power Delivery) USB-C port did not work; you need to use a standard 5v USB power source.


The HA1G has a lot of advanced features that you typically only see in ham or commercial radios. The high / low power setting is defaulted to the maximum FCC power allowed on each frequency for a handheld but you always set the power to low whenever designed. According to my tests using a Bird 43 meter and 400Mhz element, the radio puts out nearly 6 watts on High and just about 1 watt on Low. The radio has a Wide / Narrow setting to set the TX/RX bandwidth accordingly. Time out timer, VOX, and Mic Gain, FM radio and NOAA WX are all included.

The HA1G is VERY rugged and design choices have been made to enhance its durability, such as the decision to use a Motorola-style speaker/mic connection on the side instead of the more common K2 connector. This is the same connector that is used with the programming cable, as well. This image has the side cover removed to expose the underlying connection. The way the battery is secured ensures that it won't pop out because of an accidental drop.


The PTT button is massive; you won't be able to accidentally miss it when picking up the radio to talk. Below the PTT button are two buttons that can programmed to respond to do different things based on a short or long press. One cool use for this is to make one of the soft buttons the Band A PTT and one the Band B PTT, regardless of which band is activated. Activating the built-in FM radio is a good function to program onto one of these buttons for long press (it comes like that from the factory). But you can literally program these buttons to do whatever you want.


When the radio transmits or receives, the screen changes to tell you which Band is in use, the frequency, as well as any CTCSS or DCS code. The percentage indicator at the top is a version of an S-Meter, although I'm not entirely sure what it represents.


One unusual thing I discovered is the location of the mic, toward the top right below the antenna. This approach is fine, but the user needs to be aware that it's in a different spot than on most HTs. Note the location in this picture, right below the removable SMA antenna.


The audio produced by the built-in speaker is very LOUD, but it does have a bit of a very slightly muffled quality which is normal for waterproof radios. I've certainly heard much worse on much more expensive radios. One thing that could use some improvement is the contrast of the display outdoors. Overall, the HA1G has a very nice, well thought out display, but it can be a bit difficult to read in the direct sunlight. This is a common problem with color displays on radios. This photo of the radio outdoors in the direct sunlight is a bit exaggerated by the camera aperture and white balance, but it illustrates the point.


Looking at the above picture, you can see that you can quickly access the most common radio parameters directly from the keypad via a long press. I found this to be one of the most useful features. You can also see in the photo above that the radio can display two bands at once. You can also toggle it to display / listen to only one band. Why would you want to have two GMRS bands active at once? Well, one use case is the built-in scanner. Using the free software, you can create scan lists which can be any frequency in the VHF/UHF RX coverage area. That's right, this radio will RX VHF frequencies as well. Here's an example where I programmed my local Police VHF frequencies into a Scan List that I use to listen on band B will using band A for GMRS TX frequencies.


BTW, I feel that the scanner itself is a little slow, but it's about the same speed as most radios in the price category. Another neat feature is the ability to create Zones, much like you might do with a commercial radio. This is especially useful if you travel; you could create different zones that represent the GMRS repeaters in different cities, for example. You can create 16 zones, with 16 channels in each zone.


In addition to the standard scan list and zones feature, you can create a special "Emergency" scan list / zone, complete with a specialized alarm if that frequency is heard.



Programming software is available from Retevis' website; I had no issues with the software. Even the USB driver for the cable was trouble-free; anyone with experience with these types of radios knows how challenging USB drivers can be. I found the software very easy and intuitive to use.

Overall, this GMRS radio has a ton of features that you normally see in Amateur or Commercial radios. It's built tough and easy to use and should be a strong contender to put into your arsenal if you are a GMRS user. At the time of this writing, the price is about $75 on Amazon:

Buy Ailunce HA1G on Amazon Here!

Mobile DX Rig

Let's have some fun in the mobile!


Racing on the Air FAQ, Rules, and Tips

Racing on the Air is intended to be a fun way to operate ham radio at any type of racing event. Any type of formal racing event may be activated by any licensed ham, anywhere in the world. This is a fun, informal activity meant to promote ham radio and give new opportunities to make contacts at interesting events.

Here are the basics you need to know to participate:
  • Any type of organized racing event is eligible for activation. This includes auto racing events such as NASCAR, F1, Le Mans, IndyCar, NHRA. Horse Racing events, bicycle racing such as the Tour de France or Baker to Vegas qualify. Marathons, boat and airplane races are all included. Off road racing such as the King of the Hammers and Baja 1000 are included. Even your local Saturday night NASCAR track can be activated. Basically, if it's some type of formally organized racing event, you can activate it.
  • To notify others of your activation, make a new post in this forum section letting people know which event you intend to activate. Give some indicators of the dates, time, bands, and modes you intend to operate to help others find you.
  • You are free to edit your announcement if you need to update date, time, frequencies, modes, etc.
  • When calling, please use "CQ Racing on the Air" or "CQ ROTA" as the activity becomes more well known.
  • After the event, edit your original post and append your log of contacts. You can do this by attaching an ADIF file, a text file, or just posting the list of stations.
  • If your club already activates a race (such as the Indianapolis Motor Speedway), do what you already do and we would appreciate you making a post here and uploading the event log.
  • If you want to be notified of activations, be sure to subscribe to this forum section to receive emails.
  • Follow all local laws and rules related to Amateur Radio.
  • Be a courteous operator.
There aren't any awards for participating; this is for fun and bragging rights. We also want to see photos of the event, your station, and the racing, so please post them for us to see!

Jan 6, 2024 Trip to the K9KAO Repeater Photoblog

The K9KAO 440 Mhz repeater sits atop Sunset Peak in Southern California at 5200 feet, providing terrific coverage to the greater Los Angeles area. This last weekend, three of us took the trip up the mountain to do some much needed maintenance, including replacing the Motorola Quantar power amplifier and installing a new Wifi downlink dish. I decided to make a photoblog of the most interesting parts of the trip as well as the repeater site itself.

The first leg of the trip is a drive up to Mt. Baldy Village, which is at the base of the the Mt. Baldy Ski Resort. As you reach the village, you head west for a few miles before arriving at the dirt road that heads up to the repeater site. After a couple of years of heavy rainfall in SoCal, the road is in serious need of maintenance and it's basically now a Jeep trail. Much of of the trail is on the north side of the mountain which offers nice scenery and views of the taller mountain range to the north.


Here's a shot looking to the north with a portion of Mt. Baldy at 10,000 feet visible to the right.


The view up this trail is breathtaking and pictures just don't do it justice. Here's another image looking to the north showing much of the San Gabriel Mountain range.


The last few weeks had a few days of light rain in the city and the temperatures in the mountain are low enough to bring a bit of light snow. I was still a little surprised to see snow on parts of this trail, though. The snow wasn't deep, but it was frozen and slick so being a bit cautious was certainly warranted.


Eventually the trail winds around to the south side of the mountain as you start to get closer to the radio site. This is where the road starts to get a bit "fun". There are a bunch of spots like this:


As we go up, the road gets narrower and we start to see the radio towers.


A little farther and more towers appear.


Now a few pictures off the good stuff. This is the vault and tower where our repeater is located.


And here's a couple of shots of the tower itself.


The receive antennas is shared by a couple of different repeaters housed at the same location and is at the very top of the tower, visible here.


Coming around from a different angle, the transmit antenna is about half-way up the tower. In this shot, it's the massive antenna second from the left which extends through the pic.


The first task was to replace the failed power amplifier. This repeater is one of the busiest in SoCal and it's not uncommon for it to be busy most hours of the day, every day. This type of duty cycle certainly puts a strain on the PA. Fortunately the effort to do this is just a simple module swap on the bottom left of the Quantar. In this shot, you can also see that we use an Arcom RC210 controller.


Once that was done, it was time to replace the WiFi dish to reestablish internet service to the repeater. Here's Henry, K9KAO mounting the dish from the roof.


We made bearing and azimuth calculations to the uplink site, so aligning the dishes only took about 15 minutes. All of the existing ethernet and wifi inside the vault was still working, so as soon as the dish work was done, internet was back online. Initially, this just allows us to control the repeater remotely, but we will soon be hooking it up to other services such as Allstar. Before we got off the roof, I took a 180 degree panoramic shot from the site to help provide an idea of the coverage. The Pacific Ocean is on the horizon.


After lunch and a couple of cold beers, it was time to head back. Here's one more shot of the repeater coverage view from the road with the building to the left.


The ride home was uneventful, but since it was now late afternoon, the new sun angle provided for additional opportunities for pictures of the scenery.


One last pic, half way back down the trail.


It's an 82 mile round trip drive which takes a while due to the trail time. On a clear day like this, the views are stunning, making the time fly. Now that winter is here, we'll have to be a little judicious about when we travel to the site, but that won't hold us back from adding new capabilities to the system in 2024. Hope you enjoyed the ride along!

Antenna tower as abstract art

This past weekend I visited the Nevada Museum of Art in Reno, NV. One of the galleries was sculptures by a guy named Cannupa Hanska Luger. I was surprised at the subject matter of this piece called The Keep, so I took a photo and copied the text to share. It's three stories tall.


The Keep 2023

Lodgepole pine, California pine, abaca paper, and mixed media

Luger made this large scale sculpture from lodgepole pine trunks and a Western white pine tree that was previously growing on the museum's property, but which was removed during the museum's current expansion. The approximaetly twenty-five foot sculpture emulates a radio tower used to emit and receive faraway signals. As an instrument of communication, within a cargo cult context, it is built in the hopes of transmitting messages to the gods or ancestors to send more goods. Within, the context of the exhibition, however, the tower is intended to provoke critical questions about the nature of communication itself, and ask important questions about who is empowered to speak and whose messages remain silent.

Elecraft K4D Noise Reduction compared to BHI NR module

I've owned the Elecraft K4D for a while now. It's a wonderful rig. However, I am deeply disappointed in the NR capabilities on SSB and several have brought this up on the various Elecraft forums. Wayne N6KR, one of the Principals of Elecraft has commented that they intend to improve it by adding spectral subtraction algorithms, but for now it's basically a copy/paste of the code from the older K3 rig. I got tired of waiting around and decided to improve the situation by trying out the BHI Dual In-Line Noise Eliminating Module.

Because the Elecraft K4D has stereo speaker / headphone output (which is used in a variety of ways), it was important to me to buy this specific BHI box, which supports both external stereo speakers and stereo headphones. They can be used independently or together and even have separate volume controls. I shot a brief video doing a quick demonstration of both unit's NR capabilities, as well as using them both together. Note that I could have made additional adjustments on the BHI module, but I felt the demonstration was good enough as is. To keep the comparison on a level playing field, I made no additional adjustments on the K4 other than adjusting the volume as needed.

What do you think?

Retevis RA89 10 Watt Waterproof VHF/UHF Handheld Review

For the last couple of months, I have been extensively using a pre-release model of the Retevis RA89 10 watt VHF/UHF handheld radio. Now that the radio is fully released to market, I figured it was time to write a review.


The RA89 is marketed as an IP68 rated rugged radio. The IP68 rating means that it will survive being submerged in fresh water up to 1.5 meters deep for 30 minutes and is also dustproof. After the first few weeks of basic, everyday use, I decided to put the IP68 rating to an extreme torture test and put it in the Pacific Ocean surf, allowing it to tumble around in the sand and saltwater to see what happened. This type of test is well beyond what is expected by an IP68 rating and the radio survived just fine, even if it did take me a few days to get rid of all the salt and sand in every crevice. The video of this test is at the end of this post. This is a tough little radio; I have dropped it more than a few times on accident and it has survived the concrete, so far.

This radio follows the trend of other recent radios by incorporating a USB-C charging port, which I really like. Unlike another brand I recently reviewed, the RA89 will charge when connected to a PD port, even if it doesn't charge at max speed. In my opinion, this is well thought out because it allows you to use any typical USB-C charger or battery. The included 2500 mAh battery lasts a long time and is absolutely needed if you plan to transmit at full power for long periods of time.

Interesting Features

The Retevis RA89 covers all of the basic feature you find in similar radios, including frequency scanning, CTCSS and DCS scanning, PC programming, and FM radio functions. The radio has "dual watch", meaning it can monitor both A and B VFOs but it is not true dual receive; whichever VFO detects a signal first is the one that wins. It can also monitor for traffic while listening to the FM radio, which is nice. A recent firmware update added Mic Gain functionality which is very helpful. Interestingly, there is a RX DSP Noise Reduction feature which greatly reduces background noise on the incoming signal much like the type of functionality typically seen in HF rigs or DSP speakers. The NR feature is called "RX ENC" in the menu. Personally, I find it a bit too aggressive, but it is helpful under certain circumstances, especially longer range simplex operations. If you are going to use the noise reduction feature, you should probably turn off the Receive Saver (RX. SAV) because you tend to miss the first word or two of an incoming transmission. Unlike a lot of other radios in this price point, the antenna connects via a female SMA, similar to what is found in the Kenwood, Yaesu, or Icom radios. I prefer this because I can use other antennas that I already own, if desired. Lastly, the audio is LOUD, which is always a plus.

Transmit Power and Spectrum Analyzer Tests

As always, I tested the radio to see if it provides the advertised power output. The test setup is a fully charged battery fed into a Bird 43P with appropriate VHF and UHF 50 watt elements transmitting into a dummy load.


Both the VHF and UHF tests produced the same power output results: 9 watts on high, 5 watts on medium, and 2 watts on low power settings. Keep in mind that the Bird 43 has a full scale accuracy rating of +- 5%, so these test results indicate the radio delivers power output pretty close to as advertised.

Spec Analyzer tests are done using a TinySA Ultra by feeding the radio directly into the spec analyzer through an appropriate amount of attenuation to ensure the TinySA is not damaged. This is not exactly how the labs perform the tests for the FCC (they test using the supplied antenna in a fully RF quiet room), but it's still a decent way for us to test spectral purity.

Here's the 2m test; the transmit frequency is on the far left to easily show harmonics:


The 2nd, 3rd, 4th, and 5th harmonics are all significant, well above what would be considered acceptable by the FCC.

Here is the 440Mhz spec analyzer test:


These results look a little better but are still outside the FCC parameters. Retevis tells me that they are trying to obtain FCC certification for amateur radio service, so they're probably going to be forced to clean this up a bit if they're serious.

Overall, I'm happy with the performance of this radio. I've received no transmit audio complaints and other locals even think the goofy roger beep which can be turned on is "cute" :) It is certainly rugged and at a price point that is hard to beat. The programming cable and software provided worked flawlessly on my Windows 11 machine and CHIRP programming should be supported soon. The starting price of this 10 watt radio is currently $63 on Amazon; affiliate links are provided below if you're interested in purchasing.

Single Radio:
Amazon product ASIN B0CCNQT27K
Single Radio with Mic:
Amazon product ASIN B0CCNVRDBX
2 Pack:
Amazon product ASIN B0CCNX8JPT
4 Pack:
Amazon product ASIN B0CCNJ24JN

Retevis RA89 IP68 handheld radio torture test

Retevis send me their new RA89 VHF/UHF 10 watt handheld which is IP68 rated to test out. Being near the Pacific Ocean, I promised them a good salt water test. I don't think they had THIS in mind :cool:. More on this new radio coming soon...

Retevis RT95 VHF/UHF Mobile Review

Retevis recently contacted me to review their RT95 VHF/UHF 25 watt mobile radio. Of course, I'm always up for playing with a new (to me) radio, so I couldn't wait to get my hands on it. Here are my initial thoughts after using it for a few weeks.


First, this mobile radio really is pretty small in size, but the screen is large enough to read clearly. Overall dimensions are 4.75" wide x 6.5" deep (including heat sink and main knob) x 1.5" tall. While it is small, I still wish the face plate was detachable like others on the market, but that would probably drive the price up. The mic buttons are backlit and large enough to also read easily. One interesting feature is that you can switch the audio output to the main speaker (radio body or external) and the mic, or both at the same time. Audio output from the main radio unit is nice and LOUD. Unfortunately there is no mic gain function.


One of the best features of this radio is the ability to flip the display upside down to suit mounting in either position so you can hear the speaker. For example, if you want to mount it overhead, keep the display in the normal position. If you want to mount it on the dash, flip the screen to make the speaker face up. In the flipped position, the main body buttons will be upside down (of course), but that really doesn't matter and only takes a minute to get used to.


A nuance I discovered right away is that the 440Mhz frequency range for the U.S. model is wrong, limited to 430-440Mhz. This is easy to correct by unlocking the radio to the full 136-174 MHz and 400-490MHz range by following the simple instructions published by Retevis. While the radio has "dual watch" capabilities to monitor transmissions on either VFO, it is not a dual receive radio. For operators in small towns or rural areas, this may not be an issue, but if you want to use this radio in area where you monitor multiple frequencies, or have a need to duplex, you're out of luck. The top of the radio has a heat warning, and I can confirm that when you get long winded, the radio body gets hot to the touch. The heat sink is beefy, but putting this radio in a well-ventilated location should be considered necessary. Programming the radio with the supplied cable and a current version of CHIRP proved very painless, but make sure you choose the VOX model from the CHIRP radio list.

User Interface
Another really good feature is the 10 programmable buttons: P1 to P6 on the main unit, and PA through PD on the mic can all be set to pretty much whatever function you want. The main P1-P6 buttons can each have two functions set: one by default and another activated when the FUNC button is pressed. That's a total of 16 programmable buttons! The main knob also has a press function that may be needed on several of the programmed functions. For example, while turning on CTCSS or DCS, you press in on the main dial to select the tone or code. While using the radio, a quick press on the main dial changes frequency precision, used while changing frequencies. A long press on the main dial locks the radio from accidental changes.

Power Output
The RT95 is advertised as a 25 watt radio. To test this, I hooked it up to a Bird 43P and a dummy load with 50 watt elements for 100-250Mhz and 400-1000Mhz. With a power supply delivering 13.7 volts as measured by the radio, the following was observed: At 146.52Mhz, the high power setting resulted in 21 watts, medium setting produced 15 watts, and low power setting resulted in 4 watts. Changing to 444.5Mhz resulted in 20 watts, 13 watts, and 4.75 watts at each power setting.

Spectrum Analyzer Results
I hooked up the RT95 to a TinySA Ultra to observe the spectral purity on both bands. On each plot, markers have been placed at the major harmonics. Here's the first plot with a fundamental TX frequency at 146.52:


The results were a little better than I was expecting; both the 2nd and 3rd harmonic are below -50db. Keep in mind that the FCC specs for radios that transmit at these frequencies are -40db down and no more than 25 microwatts. So while the 3rd harmonic of the RT95 on 2 meters is -55db, if transmitting at 20 watts, it is still putting out 60 microwatts, which is well over the FCC requirement.

The spec analyzer plot for a fundamental 444.50Mhz transmissions produce similar results:

The Retevis RT95 is a small but rugged radio that will fit nicely in most vehicles. In my opinion, it is especially suited for offroad vehicles such as Jeeps, UTVs and the like. The loud volume and rotatable display will be appreciated by most. It has plenty of programmable channels and includes all of the basic radio functions you'd expect including scanning. The user programmable buttons are a very nice feature. If the radio had mic gain and true dual RX, it would be even better, but the current $125 price point makes this radio difficult to pass up.

The Retevis RT95 is available on Amazon

Amazon product ASIN B075M9QV8P

TIDRADIO TD-H8: FCC Approved 10 Watt Handheld Radio

Sometime in 2022, TIDRADIO contacted me about testing a beta version of a new 10 Watt VHF/UHF handheld they called the TD-H8. Of course, I can't turn down an offer like that, so I jumped on the opportunity and provided them with a variety of things to consider for the production model. Fast forward to June 2023, and I received an email from the manufacturer that the radio had been approved by the FCC for both GMRS and Amateur services and was now available if I would like to try out the new release. I've now owned the radio for about a week, and here my initial review.

The first thing the manufacturer told me is that the new model now has a USB-C charging port instead of the traditional drop-in charger. The USB-C port is actually on the battery and can be charged without being attached to the radio. The radio also comes with two batteries!


Because the USB-C port is part of the battery, it cannot be used for data transfer / programming the radio. But the upside is that you can keep the extra charging while using the radio. As expected, the LED indicator on the battery changes from red to green color once fully charged.

This radio is remarkably easy to use. I don't think I really even looked in the manual for any of the menu functions, although I messed with one or two to figure out what they did. The color screen is large and easy to read; the buttons and menu are well laid out. One very nice feature is that this radio comes with Bluetooth, although it currently is only for use with the ODMaster programming software. The BL button is used to turn bluetooth on/off.


ODMaster is the proprietary app for programming with bluetooth via your phone. The web version can be used to create & save radio profiles from your PC, but you must use the phone app to load them. A convenient feature of ODMaster is that it can use your location to list repeaters in your current area which can quickly be assigned to radio channels. You can also save the programming files and upload them so others can use or you can keep them private to your account. For a more feature rich programming experience such as import/export from CSV files, Chirp can be used with a typical Baofeng cable. Note that as of this writing, Chirp is a little buggy with the radio - the latest version changed the language to Chinese and I had to use ODMaster to correct it. One easter egg in the programming software is the Mic Gain function, which can be adjusted from 1-32. My locals said it sounded good at setting 20. There is currently no menu function on the radio for this feature.

The radio ships with a hand speaker/mic shaped like a miniature Motorola mic, two batteries, a standard antenna and longer high gain antenna, belt clip, lanyard and USB charger. The USB-C charging port works with any standard, 5V USB charger. The manual has a warning about trying to use a charger with higher voltage. I tried it on a PD USB-C port and it did nothing, but didn't damage the battery.


Power Output
Now comes the question that everyone is probably asking: "Does this handheld radio really put out 10 watts?" To find out, I used a Bird 43 Meter into a dummy load with a Bird 50C element for 100-250Mhz and a Coaxial Dynamics 82048 50 watt element rated for 400-1000 Mhz. Here are my test results:

For each Ham band, I tested at the band edges and the center for the frequencies the radio is rated for. There is a small amount variance across the band, but this is normal for most radios. In the middle of 2 meters, the Low setting yielded 2 watts; Medium resulted in 4 watts, and High produced 11 watts. In the middle of the 440 band, Low produced 3 watts, Medium was 6 watts, and High produced 10 watts. The radio certainly puts out the power advertised! Note, when the radio is GMRS mode, power is restricted to 2 watts and 4 watts for Low and High respectively.

GMRS vs. Ham vs. Unlocked Modes
The TD-H8 is FCC licensed for GMRS and Amateur use. To change the band and power restrictions for the appropriate service, you can either use the programming software on the company's website or use some special button combinations. The radio can also be completely unlocked, as well. To toggle the radio for each service from they keypad, first turn the radio off. For GMRS hold PTT + 0 while turning the radio on. For HAM, hold PTT + * while powering on. For completely unlocked, hold PTT + # while powering on. In each case, press the MENU button when prompted for the mode you want. Be advised that changing the service will wipe out all of your settings and programmed memories.

Splash Tests
I created a codeplug with the VHF Marine frequencies, as well as a few local repeaters that I knew I could hit while ocean fishing Los Angeles / Long Beach inshore. My friend has a 20' center console, so I took it with me to see if would hold up knowing it was going to get sprayed with salt water. First, the volume on this radio is LOUD and I had no problem hearing it over the motor while running 20-30 knots (although to be fair, new outboards are pretty quiet). I had the radio on my belt with the hand mic attached by my collar. The radio and mic got soaked because their was considerable wind chop, which caused a lot of spray while we were running between spots. But the radio never cared. I rinsed it with fresh water when I got home to clear any salt residue.

Last Thoughts
The IP65 rated radio comes with a few other nice to have features, including NOAA Weather channels, FM Broadcast capabilities, and built-in flashlight. The programmable soft buttons can be set for different functions for long press or short press. For $89.99, you're getting a heck of a powerful FCC approved handheld radio. This is now my favorite inexpensive VHF/UHF handheld.

Amazon product ASIN B0C27VBC5J

P.S. If you're interested in seeing how this radio measures up on the Spec Analyzer, I've posted it here.

*edited with price correction
*edited to add Splash Test section
*edit to correct Amateur certification as of 7/10/23. Added link to Spec Analyzer results