[Amps] 3CX3000A7 on 144 MHz

[Jim]

There is a files are on the amps group on groups.io

amps at groups.io



Thanks
73
Jim W7RY

On 2/8/2020 6:55 PM, Conrad PA5Y wrote:
> There are several 3CX3000A7s in use on 144 MHz in EU and they are all different. They range from 1/2wl striplines or 1/2wl tube over the anode like the RX1AS GS35B design to a clone of the W6PO but with a PTFE sandwich on top of the anode line instead of CRL blocking caps. The most compact that I have seen uses a variant of the G8RWB YC156 2m anode line design with a PTFE sandwich. The input is pretty much the same as the W6PO 8877 design on all of them.
>
> BTW the YC156 goes well on 2m. Depending on heater transformer availability I may use a YC156. Still undecided.
>
> When I have time I will get permission from the owners of the amplifiers and maybe put a page up
>
> Regards
>
> Conrad PA5Y
>
> -----Original Message-----
> From: Amps <amps-bounces at contesting.com> On Behalf Of donroden at hiwaay.net
> Sent: 07 February 2020 17:46
> To: amps at contesting.com
> Subject: Re: [Amps] 3CX3000A7 on 144 MHz
>
> I'd like to see a picture of the Plate Circuit on 2 Meters with a 3CX3000.
>
> Don R  W4DNR
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