¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: Tuned input


 

¿ªÔÆÌåÓý

Everything is in bound. I found the relays and made an offer on the trimmers and the seller accepted.? Going to have 125 bucks or so into this.? Will probably need some mica caps also. I have some, Fred sent some. We will see.??

Should be able to start the build next week.?

This will be interesting.? I took drive power/output power/IMD/GAIN/ efficiency plots of the amplifier without the input.? Let's see what the fly wheel effect does back-to-back.

I do need to order some micro switches.? On this amp there is no 10-meter 24-volt signal. The 10/15 share a band position.? It uses a roller.? I will need to mount the micro switch to the roller or drive system to click in the 10 meter input and drop the 15-meter input when the roller gets past 15 one its way to 10 meters.

C


From: [email protected] <[email protected]> on behalf of mike repinski via groups.io <mikflathead@...>
Sent: Tuesday, January 2, 2024 11:35 AM
To: [email protected] <[email protected]>
Subject: Re: [ham-amplifiers] Tuned input
?
I see a quantity on Ebay but they are a small fortune. Not what I expected.

On Tuesday, January 2, 2024 at 12:37:28 PM EST, W7WRX <clark@...> wrote:


Mike.? I ordered the board from Fred at FAR.? He did not have relays or the trimmers.

I found the relays and have ordered them.??

I can't find the trimmers.? I need eight 30-300PF and two 100 to 700pf trimmers.? No data on what they are or voltage ratings.? Any idea?? Arco?

RELAYS 6 G2R-24-DC12 1N4002 6 DIODES T50-2 1 10 WITH #18 WIRE T50-2 1 15 WITH #18 WIRE T50-2 1 20 WITH #22 WIRE T50-6 1 40 WITH #22 WIRE T68-2 1 80 WITH #20 WIRE T80-2 1 160 WITH #22 WIRE TRIMMER 8 10, 15, 20, 40 30-300P TRIMMER 2 80 100-700 TRIMMER 2 160 100-700 WITH 680 PF IN PARALLEL 680 PF 500V 2 160 680 PF 500V SILVER MICA CAP P C BOARD 1 HARDWARE 4 ? IN STAND OFFS HARDWARE 8 6-32 SCREW

Join [email protected] to automatically receive all group messages.