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Merrit Arnold’s wife took over and lots changed. I send my customers to penta now have for months. If ever a tube issue replacement is quick. Nothing against rf parts , my customers get the whole

Thanks Robert. There are numerous reports that a batch of the chokes were burning up on 17m. Anyway, problem solved, I have emailed W8JI with a view of purchasing a few of his. 73, Alek VK6APK

Interesting I've installed the RFC3 in AL82, RFParts 3-500 with 1600w out into Navy surplus dummy load. Tested ALL bands including warc. Never noticed an issue. Solid. Same with Alpha 89 with RFC3

It is probably because of the paperwork blizzard to send something when customs are involved. It appears to be different for each country. I personally have only sent things to Canada and Australia.

Is it because you just can't see us from up there...?

Dave, I don't think it's an ITAR issue...... 73 Mike N2LYM

What are the issues with Ameritron Plate Chokes? I have used an RF Parts look alike for several amplifier projects. https://www.rfparts.com/rfc3.html More chokes here

Does anyone know if Ameritron have resolved the issues with their spare parts plate chokes? I would be interested in purchasing a couple if they are not going to burn up. 73, Alek VK6APK.

And they are using this 88uh loaded plate choke in the normal place... at the anode ?

This one: [drossel.jpg] 73 Peter -----Original-Nachricht----- Betreff: Re: [ham-amplifiers] Loaded Plate chokes...again Datum: 2024-02-16T16:34:06+0100 Von: "Jim VE7RF" <jim.thom@...> An:

Where is the? 88 uh...down at the bottom ?

The version on the posted photo has 88?H. It is also used in the 20kW R&S VK20 amp with RS1082CL at 8kV 5A ,1.5-30MHz, 24/7. 73 Peter -----Original-Nachricht----- Betreff: Re: [ham-amplifiers] Loaded

##? 125 uh would work....just, on 80m.? ( 1,5 amps of RF flowing through the choke on 75m).? With the bigger 20 ga magnet wire used, it would work. 125 uh would result in 2.97 amps of RF flowing

##? How much B+ ?? ?How much plate current ?? What freqs ?? ?How much uh is their loaded plate chokes?

Ah ok. Bob W4JFA

The Rohde&Schwarz chokes are with solid rod. 73 Peter -----Original-Nachricht----- Betreff: Re: [ham-amplifiers] Loaded Plate chokes...again Datum: 2024-02-15T18:39:13+0100 Von: "Jim VE7RF"

Probably so less likely to draw an arc to the chassis , no sharp point

## My guess is to shift one of the series resonance freqs.? ?I have seen a similar trick used before, where a snug fitting copper band (3/8" to 1/2" tall)? was slid? up / down the entire length of

Looks really nice. What's the purpose of the ring around the base of the choke? I have not seen that before. ________________________________ Sent: Wednesday, February 14, 2024 6:40 PM To:

Oops, fat fingers... no, it was on 7025, 40m. Steve, K0XP