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I ordered a Omron MY-4 12vdc today, I would think that should work out ok

Hi Nomad, yes it is soldered into the circuit board, however I think I want to install a socket into the board for ease of removal later so think I will use a relay with the flat pins instead. It is a 14 pin relay and I will get you a wider photo later today however not sure if that will help or...

Hi guys I am wanting to replace a golden eagle 750 keying relay. This is the black box linear. The relay has part number ITT 4ZB-CR or possibly 35577. I have been unable to locate one with this part number and the other thing that is confusing me is it says it's 24 VAC ‍♂️ ? When I test the...

Got er installed Nomadradio, I guess I will have to purchase a couple more of those in the near future, pretty handy device works great

Awesome, I may go that route then ! Thanks Nomad

Yeah, I have one of your relay boards already Nomadradio but I didn't know if that transistor could withstand the kind of drive that amp is getting, if so then that would be a easy way of doing it for sure

Ok, thank you I think I will just leave this one alone then because I believe it has been untouched except the fact some previous owner installed the 2500 band switch to gain 10 meter I believe. It still has the 8875 tubes in it and they seem to put out plenty

10-4 SuperLid, I will read the manual on it however I have friends that have the same amp and they state that theirs will key up without a pedel or using the relay jack and the fan speeds up faster when using it this way but mine does not. I will check out the manual

Hi all, I have a Dentron 2500b that I can key up just fine with a pedel but it's rf sniffer circuit or whatever is not functional and this beast is a little different than what I am use to working on. I guess my question is what do you guys think could be the issue since I don't see a keying...

Hey, I can't thank both you fellas near enough! I wired her up with a fixed bias and ram the screen grid through the center of the relay and now I can even run a 6L6 which is exactly what I wanted to be able to do switch back and forth between tubes for driver use, working perfectly

Not to mention his great aftermarket boards and products he puts out there for guys like me !!!! I am a big Tram fan and those BA boards he has are the tits ! I run those in every Tram D201 that I have ! The keying relay board is another great addition amongst others

You got that right Shockwave! Thank you Nomadradio!!!! For all you do here !

Yes, thank you Shockwave yeah I think I will go with the fixed -36 bias and put that screen voltage on the center tap of the relay, thank you !

I worked on it a bit more tonight, I guess the deal is that these older JB150 don't like a 6L6 tube as much probably due to that screen grid voltage always being present " I run a 6L6 in the JB150 that has a seeker meter all the time but it's a better setup" I installed a 8417 tube back in the...

I absolutely understand exactly what you are stating here Nomadradio and I may end up changing this box this way myself, as of right now the bias is backwards I think-25 on recieve and -35 on transmit and I actually have two boxes that are this way which was one reason I was getting confused, I...

Indeed the zener was at fault, I got the new ones in and installed them and bingo, I have better negative bias however I am still noticing it trying to cherry the plate a bit in recieve mode I have -25 vdc in recieve and -37 vdc in transmit, is this backwards perhaps since it was once a recieve...

Yes, I have had the zener removed previously and there was -150 on the resistor end, hopefully when that new zener comes in all will be good

I have replaced it since the JB-150 went down as the original one was bad, I have a pack of 10 of then and replaced it again before this post, same results, I ordered a different zener so I will try that next thanks for your help on this Shockwave, we'll see what happens when I get the other one

Shouldn't that zener work though, as long as they gave me right ones, I can't hardly read the print on them even with a magnifying glass