I'm interested in knowing the general answer for any of the tubes. In specific I have a pair of 3PCX800A7 I bought when I had my Ten-Tec Titan and they were full output tubes. With the thought I may
I used to have a NOS Dahl transformer for the 77SX but sold it some time ago. It turns out I can now use another. Does anyone have a Dahl built for the 77SX/DX that is excess? Please contact me offli
I'm still looking for an internal Dahl transformer for the 77SX but I'm also looking for a filter cap for the 77SX that is greater than 4KV. A couple replies from requests I've placed on the on-line
Yes it seems to be. Does anyone have one of these caps that they don't need and would like to sell? If so, I can use it. Either that or I'll have to make a bank of caps to do the job. I'd rather use
Jim, A very nice presentation. Since I sold my Dahl Alpha 77 transformer model A77S and now need another one, and can't find anyone wanting to sell one, I'm going to have to either order one from Har
I have a clone of it and it works beautifully. You will be most pleased all that's involved in altering your amp is unsoldering the trigger wire to your bias circuit and attaching to those two points
Finding the bugs in my newly acquired amp. Today I found I could transmit but couldn't receive & I tracked the problem to amp and the with further inspection, to the Kilovac T/R. I think Jennings RJ1
Thanks to all for the replies both to say the relay is fine and on how to deal with the issue when it crops up again. Now I see there's something else; theres a change in the grid meter reading that
Something different & something to show how much I don't understand. I'm trying to understand something about transformers. What the heck is the rosetta stone for their nomenclature? In specific; I l
Manfred, Thanks for the explanation. I'll need to re-read this a few times to better get the idea, theres a lot in your reply to consider. It's hard to understand what's important when there are a lo
Snip I used Rich Measures QSK system in a SB-220 and it worked just perfectly. I never once regretted putting that in there and it was definitely worth making. Gary KA1J _____________________________
In relation to Tom's recollection of that 4-1000 amp, I remember the first time I saw someone using a tube with more than the spec sheet values on the tubes. In this case it was a friend who had a ho
Happy New Year! I'm still looking for an internal Dahl transformer for the 77DX/SX amps. I sold my NOS when I didn't need it and now want to find one like it again. If you have one or know of one ple
I was 95% finished with a 3CX3000A7 amp when I met up with the big D and I had to unload most all of my ham equipment in the fallout. What I did for a chimney for it though was pretty much ideal and
This is all too common. I placed an ad in swap.QTH.com looking for a 77SX for sale and got several suspicious replies to my request. Not trusting people I don't know I checked the IP address that's i
I need three of these. If anyone has one or three they don't need please contact me off list & thanks! Gary KA1J _______________________________________________ Amps mailing list Amps@contesting.com
Several years ago I unfortunately sold my NOS Dahl transformer for an Alpha 77SX and now unexpectedly, I can use one again. Too bad the Harbach variety were not as good as the original Dahls. I would
I'd heard about this long ago and never had read anything to formally substantiate it. I remember learning that hams were far harder on tubes in this sense than commercial services that left the tube
I always thought the old Amp Supply made some nice components. I used their tuned input on the 3CX3000A7 amp I made back around 92 and it was wonderful. What ever happened to them? They didn't seem
Back in the 80's I came across an Eimac tube that I think was a 1500 something. As I recall it had a bayonet mount but instead of fins it had many circular or curled radiators/fins on what would have