- 1 x Eimac SK-1306 chimney for the 3CX-15,000A7 [also fits the 3CX-10,000A7..and also the 4CX-10,000] all those tubes are the same 7.05" anode diam. - 1 x Eimac SK-806 chimney for a 5CX-15000B [ or
Both of these references are way off base. I strongly suggest that you study my RFI tutorial, paying careful attention to the discussion of "the pin 1 problem" and the discussion of ferrite chokes. I
A 6 mix iron powder is good for 6-10M, I use it as the L in the input pi Straight from the Micrometals spec sheets and then some testing. There is a huge difference between using it in a SS HF VFO an
Nope. Most consumer and semi-pro audio and video products, and virtually ALL ham and computer products have pin 1 problems at every audio input and output. The good news is that most PRO audio mfrs h
just 2.5M long. He also has 9 M of grnd wire from metal to the dirt. He has a xcvr + 500 w amp. He probably requires ferrite at both the base of the vertical..and also in the shack.... IE: both ends
&&&&& That 9M of grnd wire from roof to the dirt is probably causing him more problems than it solves. That's 31' of grnd wire , to get to grnd. Meanwhile, his vertical ant is radiating into both the
I thought the reason for capacitors and resistors paralleled with the series diodes was to help equalize the voltage division across the diodes, and reduce the chances of an unequal voltage division,
An impedance mismatch at the antenna (high reflected power) does not cause RF to appear on the outside of the coax. The reason RF is on the shield of the coax is because it is acting as part of the a
Why not? The output of the rectifiers provide some mighty spikes of their own. The capacitors handle it just fine. 73 Gary K4FMX provided there is no big spikes coming in off the street. In the case
White noise is real but in an amp with RX/TX relay isolation you wont hear it and it may not occur with big diodes. It is noticable with SS receiving and audio gear and a single .01 or so bypass acro
3 phase power all went off-on-off-on-off-on...all within 5 seconds. This was a power co problem, no windstorms. The surges and spikes from the above took out 8 x dc-dc power supplies, they all had po
Well now lets see: 10 * log (2.5/1.5) = 1.76, so if they were "very loud" they would have had to been doing something very right with their antenna system, or had very good propagation. Less than 2 d
So they are going to be disqualified then? I hope so. 73 Jim W7RY The CQ WorldWide rules state that no station may use more than 1500 watts 3db...thanks. I'm allowed 2250 w pep..[ measured at the fee
"I am not saying it is right. I'm just acknowledging that it happens and that it is here to stay and none of us are going to stop it" Sure you can Alex.... Disqualify them. That will send a message.
I know this may come as a shock to some folks on this list, I know MANY honorable contesters, including some with big time reputations, who play by the rules. amount of money that can be spent on sta
This redundancy thing can be taken to infinity. Fortunately, the only life threating situation this amp provides is when I have my fingers poking around in it's guts. For normal operation, I'm happy
LGC auto tuner board as a 'tuned input'. Now that its available again, at $1200, what version of a 3CX-6000A7. I paid $1200.00 for a 2nd one. Rebuildable till hell freezes over. I paid $650.00 for a
Ameritron may be a good place to get parts but they dont seem to have any online catalogue , pretty much a requirement if you want to compare different offerings and to choose the best for your needs
http://5-19lamia.blogspot.com/ check this out. they even managed to modify a MFJ-259B to go down to 1.5 mhz ! Dunno why these folk's are gung ho to blast away at the top end of the AM broadcast band.