I have a grounded grid 3CX800 2m amplifier that needs some TLC. One of the most alarming things is that the grid is grounded by 4 small pieces of fingerstock that has seen better days. I thought that
It is indeed an interesting thread, however in my case I just felt that there was not enough contact at all and also this particular implementation was done on the cheap, rather badly. In fact there
I bought a PEP adapter for a Bird Model 43 but unfortunately the set-up instructions appear to have gone missing in the move from the UK. The adapter is marked B & M Distributors, LLC. There are 5 tr
Thanks very much to all who replied. I have the necessary information now. I'll install it tonight. 73 Conrad PA5Y _______________________________________________ Amps mailing list Amps@contesting.co
I fitted the PEP meter, it was very easy to use and works very well indeed. Highly recommended. Conrad I'll install it tonight. 73 Conrad PA5Y instructions appear to have gone missing in the move fro
Sorry no activity just checking account _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
I have not built a PSU for a GS35B for many years and I have recently moved to the Netherlands. I have no idea where I can buy the parts to build an HT supply. Some components such as SHV connectors
I have just acquired a GS35B PSU. It is 3 phase and the schematics show 3 x NTC thermistors in series with each primary. I presume that these are some kind of soft start. I am not familiar with these
I have just acquired a GS35B PSU. It is 3 phase and the schematics show 3 x NTC thermistors in series with each primary. I presume that these are some kind of soft start. I am not familiar with these
Yes for the heater transformer I will leave them in but for the HV supply I am uncomfortable with them. The resistance varies with load so how can this be good for anode supply regulation? The parts
I have changed them out for a traditional soft start, in fact the one shown on the GM3SEK triode board. I have used this circuit many times and trust it totally. Regards Conrad PA5Y On 02/02/2016 17:
I have a couple of EBM-PABST 3254J/2H3P fans which have a 4 wire interface. I do not want to use PWM and while they run with just the positive and negative DC voltage applied they tend to change spee
That does not answer my question, it shows a link to a lot of ways of how to implement PWM. I do not wish to have any potentially noisy PWM circuits I just want to know what to do with the PWM and ta
How very sociable. I am glad that you guys only inhabit bands that I am not the least bit interested in. Conrad PA5Y I have used WSJT, [....] but my interest quickly faded, for the same reason that I
Hello Manfred thanks for the useful advice. The interference was magnetic from the DC wires. Some ferrite and following your advice cured the problem and now it is good. I am a weak signal VHF operat
That is very nice indeed but I just know that I will not be able to justify the price. It appears to be an excellent product! Conrad PA5Y http://www.telepostinc.com/LP-500.html Enjoy 73 Jim W7RY ____
Can anyone help me obtain a copy of the the 3CX800 6m amplifier from the ARRL 1987 handbook? Regards Conrad PA5Y _______________________________________________ Amps mailing list Amps@contesting.com
This is still one of the best lists, I received 3 copies of the article thanks very much. 73 Conrad PA5Y Regards Conrad PA5Y _______________________________________________ Amps mailing list Amps@con
Only that I have a 2m 3CX800 design and I have limited space and the design is compact. It is a starting point for me, seems ideal for my purpose. My copy of the handbook is still in the UK. 73 Conra