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Lou, Mike, Jim, Adrian and all, I removed the tubes one at a time.? I let the amp idle (no drive) for 10 minutes with each tube in place individually.?? No signs of anything overheating.? I then

I've already installed, and have been running, the program. But mine is running some 3 or 4 MINUTES behind the amplifier, and since I've seen nothing complaining about that, I'm wondering whether

Mine is the 8410. TNX, Steve K0XP

Jim, it could be ?reflection. The OP didn’t give much information like if the amp works, reads hi voltage, gives idle current if keyed up, etc etc. ?I?agree with you but I’m just trying to get

I believe that the AE9K monitor program works only with the 8410 amplifier.? I have an 8100 and tried the program with it but was unable to establish communications.? I do have experience with using

Lou, on the 2nd pix, it looks like BOTH tubes are going red.? My guess is.... it's a grid to cathode short on one or both tubes. The baffling part is..... his grid and plate current meters are still

Get a hold of glen, AE0Q.? He's active on both the QRZ amp group...and also the E-ham amp group....as well as other alpha experts. Glen answers all alpha e-mail issues everyday.

Especially the PLATE VOLTAGE meter it must measure 2400 to 3000 and decay to zero with the AC line power switched off. Do NOT touch anything if it doesn’t work this way! One more thing – when you

Verify that your meters are working correctly. Bob W4JFA

That tube is bad. Remove that tube and just try the other tube by itself to see what it does. Sent from the all new AOL app for iOS

Anybody know whether there is an active Alpha amplifier group anywhere? I have a cupla questions about the AE9K monitor program for Alpha amps. TNX, Steve K0XP

FWIW? Here are the pictures I intended to attach to my previous post.?? The top is after about 1 minute and bottom is at about 5 minutes.? No drive.? No meter readings.? Adrian I got your note

Lou, Mike and all, I turned it on and watched it with no drive.? At around 5 minutes the plates began turning red. See hopefully attached pictures.? I got no reading (0) on the plate and grid

Turn amp on and observe two things, as soon as?you turn it on look for your grid meter going negative and or the plate meter reading positive. ?Look for you tubes starting to gest up in a minute or

Sounds like one of the 3-500s has a grid to cathode short. Remove them one at a time to find the bad one be VERY CAREFUL the plate meter is at zero before you touch anything. HV KILLS! 73 Mike N2LYM

Hi Everone, I've owned this amp about 5 years but used very little. The amp was refurbished (new tubes, and relays) by a guy in north Idaho about 2017, just before I bought it. I have tried to contact

I have a 4cx1500B with 350 screen, 3500 volts plate. It does 3kw peak on SSB. Its been run at 1500 with 2500 volts on plate for 4 years now. Very important to have a negative and positive going screen

Hi guys. I found this on another site - interesting ! Regards, John VK6JX Sent: Tuesday, November 28, 2023 1:24 AM To: [email protected] Subject: Re: [ham-amplifiers] CX1500 You had a weak

OK. That's very encouraging. You could be right, as we had no other 1500B tubes to compare it with. Thanks, Alek.

If you run a drill bit into the base of a 4x1k or 4x1.5k to enlarge the hole slightly, you'll also wind up grinding out that dimpled keyway that aligns the tube with the notched socket shaft. Of