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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