[Amps] 3CX3000A7 on 144 MHz

[Jim]

Sorry... A files AREA on amps.io.


Thanks
73
Jim W7RY

On 2/9/2020 6:46 AM, Jim wrote:
> 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 Ofdonroden 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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>