[Amps] Attenuator needed

[Vic K2VCO]

Thanks! I just ordered the 6 db version. Lots of interesting stuff there.

On 11/15/2010 12:54 PM, Jim Barber wrote:
> Henry radio has been selling some Florida RF attenuators on fleaBay for
> reasonable prices.
>
> http://cgi.ebay.com/New-50-Watt-Hybrid-30-dB-50-ohm-Attenuator-/390115387682?pt=LH_DefaultDomain_0&hash=item5ad4b06922
>
> If that URL doesn't work, find Henry Radio's eBay store and use the
> search term attenuator in the in-store search box.
>
> I've bought several Florida RF parts from them recently and have been
> happy with the transactions.
>
> 73,
> Jim N7CXI
>
> On 11/15/2010 12:38 PM, Vic K2VCO wrote:
>> I made a 6 db attenuator for the input of my grid-driven amplifier in order to bring the
>> drive requirement up a bit and to provide a better SWR for the exciter during tuning. I
>> used some film resistors from Mouser. I suspect that these have a low voltage rating,
>> because one of them shorted after a few minutes of 10-meter operation. They didn't show
>> any sign of heating, so I think it was a voltage/frequency issue and not simply overheating.
>>
>> Anyway, I need a 50-ohm attenuator that can dissipate about 40 watts and can be used at
>> HF. Anything from 3 to 6 db will work. I had a Henry solid-state amp that had a couple of
>> these, which bolted to the heat sink. Does anyone know where I can buy such a thing, or
>> how to make one from reasonably priced parts?
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-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/