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Way before everything became digital (because, as we've been brainwashed, digital is better), Amprobe was the leader in clamp-on ammeters. These all used analog D'Arsonval meter movements. Hopefully

I worked on a TPRD-4544 many years ago that was not tuning properly. I had a feeling the coax used to form the coupling loop was somehow defective. I ended up buying two new coupling loop assemblies

3rd world country needs some clarification these days ? ________________________________ Sent: Tuesday, January 19, 2021 3:53 AM To: [email protected] <[email protected]> Subject:

roger that . The old IF filters were wide. ________________________________ Sent: Tuesday, January 19, 2021 3:53 AM To: [email protected] <[email protected]> Subject: Re:

I picked up a UHF mobile duplexer at a hamfest several years ago and now have a project I'd like to use it with. When I go to tune it though I find that it has some slugs that I don't know the purpose

Jeff, Thanks for you comments and especially for the cable lengths. There was no evidence of arcing on the capacitor's body so I don't think it was damaged by a lightening strike. Do you have any idea

Thanks, Mike for the clarification. I have not seen clamp meters with the mechanical movement; all the ones I've seen have a digi screen. But the former is good to watch for dips and spikes :)? Good

Peter, Be careful on those old radios you mentioned. While I built many "IC-20" repeaters in the '70s that was when we had 30 KHz spacing between slots and they worked well. Presently, that won't work

Hi Mike, Please email me direct: radio5000 (at) aol (dot) c o m Thanks, Will

Curious, how is it different? It looks identical to me.

Mike, There are no other modules. Thanks, Will

Also to look at, is replacing the front display board (with the front panel LEDS) which affects both the USB and LAN connectivity. I've had to replace a number of these in the past on different

I'm presently working on a TKR-750 now on the bench. That is the VHF cousin of the TKR-850. In the KPG-91D software you want to go to EDIT> FUNCTION PORT and select the AUX tab. I used the "AUX In/Out

Piotr, I would suggest that you use the TOR signal for your COS input to the controller.? It is a combination of COR and CTCSS, so you get the benefit of a slight delay (settable in the radio code

I would be interested in the PA only I could use it for a spare for my 6meter repeater. What would you want for it. Mike W1ZFB

Motorola service bulletin specifically stated that for 100% duty cycle operation the R1225 High power repeater models were to be set to operate at 25 watts max. output from the transmitter, not from

Does anyone have any experience setting ID-O-Matic controller. I have trouble getting my to work with Kenwood TKR 850 repeater.

I ahve an IC20 and a few IC22As. Looking at the spectral output of the IC22, it is very clean. I was impressed enough to keep a few for our club's repeaters. It also has helicals ahead of the rcvr.

Adam Farson VA7OJ gives an interesting method of phase noise testing of HF receivers with his NPR method . https://www.ab4oj.com/test/main.html#NPR

If it's on 45mhz then it can go to 6 meters.? Crystals are available from Quartzlab. Are there any modules hiding behind the test set?? (the speaker assembly) I supect the cards include a squelch