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Oh I see. Well I can find 12 volt on transmit at Q203. I wonder if the RFX can tolerate that?

The 75 is totaly different from the 85HD

The RFX-85HD is just like the 150. It doesn't replace the finals. Just needs the 8v to key the amp in transmit.

Right, But I need to find 8 volts only when in transmit mode. I have been poking around this thing with a DMM and haven't found it.

Hey guys, I'm hoping someone here could tell me where to find a +8v source on transmit for a Uniden 980? I want to put a RFX-85hd on it.

One was an Expo 100 N board with two crystals and the other I'm not sure the brand but it used two IC's instead. The 122-xl had the expo board and that's the one giving me the most trouble. I repaired the traces on both radios at the clarifier, and replaced the D25 diode that gets removed or...

Uniden PC-122 help. I picked up two PC-122's, one is an XL. Both radios had frequency expanders & unlocked clarifiers installed in them. Neither radio would align worth a damn onto the center notch so I want to return them back to stock. I removed the channel expanders but they still won't...

Trouble is I don't have 1/2 a watt to work with. The SDR only puts out around .091w. I also have an external LPF in my feed line. I tried searching this forum but couldn't find what I was looking for.

Hi, I just built a Peaberry SDR for 10 meters and I now need a PA as the radio only produces .091 watts on TX . I have a KL203-p that I put in line to use the pre-amp for the receive and that works well but just as suspected, the Peaberry does not have enough output to drive the KL203-p...

Tony, what mods do you have for the KLV-1000? I have one and I'd like to increase the sideband delay a little bit.

We actually just found the controller IC (IC 802) has corroded pins and one is broken

A friend of mine has a Golden Eagle Mk IV-A that is transmitting 3 channels off frequency. Receive is fine. But here's the kicker, Channel 12 is un-effected. So for example if you tune the radio to Ch.14 it transmits on Ch.17. and 3=6 and son on. EXCEPT for channel 12. Any ideas? is the PLL chip...

I replaced the processor board today with negative results. I also soldered the board to chassis screws to ground. Could the RF amplifier transistor (Q66) cause this noise in my audio? I noticed It gets very hot so I am wondering if its shorted or burned out. I noticed today that the noise gets...

I finally got in touch with the shop that worked on it, they are shipping me another processor board.

I have been hesitant to open it up because it just came back from a certified ranger repair center about 6 months ago. But since I can't get them to answer me maybe I will break the seal. They replaced the processor in it last time because of this noise and an SWR problem. Yes I can hear it in...

I have tried the stock mic as well as another mic from a known working radio with the same results.

He y'all. I have an RHF-618 (same board as a 2950dx). It recently developed a humming/buzzing type of noise in my transmit audio. My first thought was a bad power supply as it is a base radio so I switched it from 110vac source to 12vdc and it still does it. Could this be a bad filter cap? Any...

I know this is an old thread but I was just searching receive mods for the cobra 200 and found this. Can you provide a little more detail about where you installed the .0047uf cap to clean up the white noise problem? maybe a pic? How well does this work?

I may have found it, a loose pin near the PLL connector. It's stabilized and I was able to align it. Ill have to wait till tomorrow to talk to anyone on it tho. Thanks anyway. The clarifier on this radio is unlocked and has an extremely wide range and it's way too sensitive. Can this be...

I have a Galaxy DX 2547 that all of a sudden sounds terrible on USB and it used to be great. I opened it up and proceeded to check the alignment with my B&K 1805 freq Counter and I found that all is well EXCEPT the USB Transmit section. The counter will not stabilize and just wanders around...