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Hello there, I am trying to learn about backup batteries and isolators in order to provide a good beginning for my new “used” Mobile Amplifier. ?It can draw as much as 90amps with CW, and maybe

Looking at the schematic again it's on the power supply page so must be in the power supply cabinet. Thanks guys Bob W4JFA

I have a 2K-4A it’s a pot on the chassis bottom (of the RF deck) near the front left; just the adjustment screw is visible. 73 Mike N2LYM Sent: Monday, August 07, 2023 4:18 PM To: Ham Amplifiers Ham

Usually on the back panel Sent from the all new AOL app for iOS

Good day, I have a "2K-3" desk model. Power supply separate from the RF deck. According to the schematic there's a pot to calibrate the plate current meter but I cannot find in any literature,

Here's the issue with the V regulation on the 10 kw 6m amp. Total length (1 way) from plate xfmr primary, to the new 50 kva pole pig xfmr across the street is a whopping 267'. And of course, double

Here's the issue with the V regulation on the 10 kw 6m amp. Total length (1 way) from plate xfmr primary, to the new 50 kva pole pig xfmr across the street is a whopping 267'. And of course, double

Lou, why would a 1:1? input swr raise alarms ?? ?I did notice on the heath SB-220? tuned inputs, the C1 + C2 cap values are very low? vs the L4B. IMO, the Q is way too low on every band. I gave

Typ the secret is in the tuned input.? Get that wrong, and it all goes to hell. I found this out about 45 years ago. ?If the input is broad band and the swr shows 1 to 1 it has to be investigated if

With the aprx? 500 watts of feedthrough power deducted, eff drops to 70%.? I still find that hard to believe.? ( 625 watts drive applied). Perhaps the HV meter is reading too low. Wattmeter is

Good job, congrats. But efficiency is less then 74.4%, you forgot to deduct the drive power which is fed through. 73 Peter, DJ7WW -----Original-Nachricht----- Betreff: [ham-amplifiers] 10 KW CCS ON

OK, the 2? (brand new)? x Ameritron ALS-606's only put out barely 300w on 6m (and only 400w on 75m). Ready to tear our hair out. Plan C was the new ALS-1306...which actually does work. Cut to the

A friend's GONSET 201mk3 power tranny is bad. Where is a good rebuilder or similar sized transformer for replacement ? Mucho Thanks !! Don W4DNR

Glad it helped. Let us know how the project goes. 73, Bob W4JFA

Hey Bob. Thank you from my heart for the plan and photos. I'll ask my repair guy to help me with the project. All the best, s52ow de Tilen Big thanks! V V pon., 31. jul. 2023 ob 15:51 je oseba Bob

Shows part of Input board. Bob W4JFA

Tilen, I found this showing the input switch. Not the CW/SSB switch is bypassed to operate in the SSB position only. Bob W4JFA

Tilen, I worked on a friends but cannot find any pictures but I found this web site with nice pictures on it. Hope this helps. Repair and Mods - Mike Harrison (smugmug.com)

Hello! Does anyone has the plan for tuned input mod for Dentron Clipperton L ?. I'm also searching for a meter to replace. all the best, s52ow Tilen

Chuck said Your guess is correct, it’s a 3CPX-15000B7.? I think it would be a decent choice for a quiet amplifier at 2 – 3 KW out with a very low air flow requirement, especially compared to a