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Thanks who reply my question. Sorry for my bad English, The KWS-1's origional tubes are 4CX250R, All OK, without any problem.full output(500-600W). But my friend replace with a pair Chinese NOS

Below,

Greetings all: I am looking for a Heath Warrior that has been mostly trashed out. Mainly I need chassis parts. Funds are limited. 73, Mike, W5UC

Greetings all: I am looking for a Heath Warrior that has been mostly trashed out. Mainly I need chassis parts. Funds are limited. 73, Mike, W5UC

Greetings all: I am looking for a Heath Warrior that has been mostly trashed out. Mainly I need chassis parts. Funds are limited. 73, Mike, W5UC

Because he adjusted the BIAS to make the 400-500 ma of resting plate current. You have to very closely read his message. There's a very slight language barrier. That's why I'm wondering a couple

I wondered about that problem after I clicked Send. However, if the tubes will draw 500mA, there can not be a lack of emission provided they do that briefly at 0 grid volts. I've seen a number of

RL, Because he adjusted the BIAS to make the 400-500 ma of resting plate current. You have to very closely read his message. There's a very slight language barrier. That's why I'm wondering a couple

So why is there 500mA of anode-I?

Hsu, 200 watts out, it sounds like he is not getting adequate RF drive to the finals. Its been a long time since I've tuned up a KWS-1. The ones I worked on (back in the 70's) were both 4X150 powered

Does the choke exhibit a self-resonance c. 95MHz when it is in place?

My guess is that the wattmeter is in error.

It's a possibility that the reason the plate choke did what it did was over the amp being ran at a frequency where the choke would have went self resonant. If it looked like someone had been playing

Screen PS V=350V, anode PS V=2kV. they are in Collins KWS-1. My friend have been burn in for 2 hours, the bias crrrent has ben increase to 100ma, and can get more (400-500ma) current, I think the

repairing in over. This supply) that (.1?) cap at the correct for #### Whoa. I'll be damned if I can find my henry 3k/8k ultra manual. IF u had a flash over between plate choke and chassis.... it

OK, I need professional help. I got a basket-case Henry 3K Ultra some time ago and have been repairing in my spare time. Amongst the defects it had, was a plate choke flash-over. This took out the .5

Sorry, make incorrect, WxHxD not include shaft's length.

I have 20 NOS Variable capacitors, one is 1400PF/1kV(0.65mm spacing ), another one is 200PF/3kV(2mm spacing ). a set of capacitors(1400P/1kV+200P/3.5kV)=$80, include shipping.WxHxD=92mmx87mmx85mm(