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I've installed an RFX-75 (Rev. 2) on an old, single-finaled, SS-3900 and am DELIGHTED with the results. In the past, if I wanted slightly more power out of a radio, (without an outboard/external linear amplifier) my only alternative was to install dual finals. This was a time consuming...

Great minds think ALIKE, ;)

+1; IF (and that's a big "IF") the A99 is 'truly' an end fed half wave antenna, as its relative SIZE (length) would indicate on the 11m band, before the radials / counterpoise was installed there was no doubt coaxial cable RF Radiation (common mode currents) which was contributing to the...

Hmmm, I wonder if that's WHY they have NOW incorporated the resistor? Good to know..... THANKS!

When I used to work on cars, not having a dyno, the 'rule of thumb' I used was a "seat of the pants" feel as to whether or not the performance mod was successful. Turns out that for a small to midsize car, even something as small as 5 rwhp COULD be 'felt' in the drivers seat. Likewise...

I've done some by-the-ear, and by-the-meter, and over-the-air testing of the CP-1 Top Gun Compressor from Top Gun Technologies Welcome To Top Gun Technologies and have really NOT noticed any discernible results on either AM or SSB (where I expected it to perform.) The two (2) radios I've...

Happy 2014... I have an old 1990 (Philly) Cobra 148-GTL that is giving me fits; works great on RX, and will transmit an AM carrier, but will NOT modulate properly on AM or SSB. Have already changed ALL electrolytic capacitors, RF predriver, driver, and final, have tested ALL transistors...

My favorite hand mikes are: 1. Turner Road King preamplified: 7v jobbie; worked GREAT with old school tube rigs. Unfortunately, not very durable AND the 7V batteries didn't last too long in service. (They are also getting increasingly hard to find.) 2. Astatic 575-M6: worked GREAT...

On the NEWER Ranger/Galaxy boards, doesn't seem to make a bit of difference. However, on the OLDER rigs like: HR-2600's, 2510's, & Lincolns; 5 pin Cobra 148 GTL's, TR-296's, & Grant XL's; SS-3900's; Cobra 29 LTD's: YES, the 2SC2999's DO make a difference on receive. I have found them...

Assuming it works correctly, I'd say: EXCELLENT DEAL! Good luck.

I've got mixed feelings on this issue: On the one hand, I'm thinking: "if it ain't broke, don't fix it" along with: "if it works, don't mess with it." However, on the OTHER hand, the older the rig, and/or the more 'used & abused' it is, or if it was an eBay or garage sale special...

On BOTH the IC-718 and the IC-706 (versions) there is a 13 pin DIN plug on the BACK of the radio(s) that when you insert an amplified microphone (aka: power mic) THERE, instead of the front of the rigs, you are thereby bypassing the low level modulation audio input and are entering the audio...

Definitely would like to see what you come up with as a remedy. Thanks and Good Luck!

Now THAT's cool!

Cobra 148GTL (Old one); TR-296; Grant XL - or - PC-122; TRC-453; TRC-465; Cobra 146 - or - Midland 79-290 - or - HR-2600; HR-2510; Lincoln (although if it gets TOO cold, you might have trouble with the LCD) - or - RCI-2950; RCI-2970 (although they too have LCD's) These are the...

Happy New Year one and all. Over the past several years, I've done various conversions from NPN finals to 2030 or IRF520 MOSFETS with mixed results. In single final radios, I typically see the MOST gain with the IRF520 versus the 2SC1969. In dual final radios, it's a 50/50 split between a...

'Miracle Ear' prototype - Circa 1954

My all-time favorite CB myth would undoubtedly have to be Shakespeare's claim of over 12 dB gain from their ABS-1600 vertical. Having said that, I'm not 'bashing' them (as I currently run the ABS-1600 and have been for over 10 years w/o fail). I'm merely stating that their claimed gain...

Well said (or 'typed') ;)

How does she walk? Why.... like an EGYPTIAN of course!