[Amps] 17 x pix of the 10 kw 6M amp...using the new Pentalab 3CX-6000A7 tube

[Jeff Blaine]

Jim, no 10m?

73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com

On 8/25/2023 5:03 PM, Steve Bookout wrote:
> Jim,
>
> How is the 'next amp' going to be used?
>
> Steve, NR4M
>
> On 8/25/2023 9:19 AM, jim.thom jim.thom at telus.net wrote:
>> 17 x pix of the 10 kw 6M amp...using the new Pentalab 3CX-6000A7 
>> tube. If
>> you want to see pix of both top + bottom of the RF deck, + pix of the HV
>> supply, here is the link.
>> https://amprepairguy.com/10kw-6-meter-custom-pa-3cx6000a7...
>> <https://amprepairguy.com/10kw-6-meter-custom-pa-3cx6000a7.html?fbclid=IwAR1rqa0I-Op9lEPcKJt2UzdmTBJxTGZa9G72wrgr6HSQcQXsD3sL2_LnWMo> 
>>
>> The next amp is the 80-15m band switched unit, using the same 3CX-6000A7
>> tube. I have finalized the design for the RF deck. Components of 
>> course are
>> a lot bigger. 1/2" silver plated tubing used for the 20-17-15m coil (and
>> also the L coil before the main PI-net). The 80-40-30 coil will be hand
>> wound, using 3/8" tubing.
>> 500 pf ceramic vacuum tune cap, and a 3000 pf vacuum load cap. Same 
>> setup
>> for the TR relays. RJ1A for the cutoff bias, and a 2nd RJ1A for the 
>> input.
>> 2 x paralleled RJ2B's for the output. 7-16 DIN connector for the 
>> output. 4
>> x 200pf HT-57 plate blockers used. I have also finalized the design 
>> for the
>> 160-80-40-20-17-15m version. It uses a 4000 pf vac load cap, and one 
>> extra
>> coil.... for 160m (silver plated 1/4" tubing used). 8-9 x 200pf HT-57 
>> plate
>> blockers used.
>> The HV supply will use a lot more B+ (7500 vdc)...and will use 2 x
>> identical plate xfmrs in parallel. Both designs employ a bandswitched PI
>> tuned input. (C1 + C2 are padded on 160m) Stay tuned.
>>
>> Jim VE7RF
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps