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Hopefully someone will help me out.? I have 3? LD-4513 Traveling Wave Tube amplifiers.? These I think operate around 2400MHz.? I would like to get some information on them.? A search on Google

Those are Z5U caps. They are a poor choice for coupling RF with high current.. No wonder they failed. Can't believe Alpha would do that. I have repaired several 8410s and I don't even remember

Howdy Dave, Just as an FYI, Henry Radio (yes, they still sell stuff...) has new "Greenstone" 3-500C tubes for sale. They are Chinese (of course), but seem okay, work well, and are

As a reminder: I just had to replace all three of the 2200 pF/6 kV disc plate blocking caps on my Alpha 8410: But there was no smell when these blew; they just shorted the high voltage, causing a

The AL-80B? does not use real deal plate block caps, but a pair of disc caps.? ?The disc caps are not RF rated either.? ? Any plate block cap needs to have enough pf? so it's reactance (XC)? is

Scott My 922 did exactly what you're describing then I had a plate short.? Plate blocking cap had let go... Cracked and got to ground.? That was the smell. It was only on specific bands too.? I

Jim, I was not aware of w8ji new site, thanks for posting! 73, Mike Mysliwiec KF8OD

On 160m it could be the padder caps? for the tune and load caps.? ?On 10m, it could be the plate choke.... and / or? bandswitch contacts.? ?How old is the AL-80B ?? After W8JI left ameritron in

Does the tube socket and/or surrounding area show any signs of overheating? Bob W4JFA wrote:

The Subject is kind of vague but I have a AL-80B. I have no issues on 75-15m.? The 15M Tuned Input is a little?off, maybe they tuned it to 17M. On 10M when starting tune up process and I get to

I do love FM……Fleetwood Mac, that is ! Sent: Thursday, December 14, 2023 11:06 AM To: [email protected] Subject: Re: [ham-amplifiers] Replacement 3-500ZG

Here is Part 8. The vac tune cap is installed vertically. The vac load cap is also installed vertically. And both have right angle drives. The massive model 90 bandswitch, made by multi-tech

No, but I get all the fame!

No, but I get all the fame! Mike VK2AMF

Hi Ron, I emailed you directly asking the price of the transformer. ? I don't know if you received it. My email is good on QRZ.com.??? ....Bill K3HZP

What do you guys think about the correction kit sold for AL-80B? al80b-al572-al800-al800h-correction-kit ( https://www.ctrengineeringinc.com/al80b-al572-al800-al800h-correction-kit/ ) 73, Tony

You’re not the drummer in Fleetwood Mac, are you Mick ?? John VK6JX From: [email protected] <[email protected]> On Behalf Of mfle2001 Sent: Tuesday, December 12, 2023 6:12

I ordered a pair from Penta Labs a year or so ago, very reasonable price with shipping to VK and amazingly well packed, so far so good in my TL922. Mike VK2AMF.

Bob, 45-50 watts in for 350-400 out 73 Nick KC0YKO ________________________________ Sent: Monday, December 11, 2023 11:45 AM To: [email protected] <[email protected]> Subject: Re:

#8 brass washer over the terminal. Sent from the all new AOL app for iOS