Re: Attenuator Recommendations
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Here is a fellow describing the exact design as used in the QEX article. You will want to build the 50dB version. This of course will have to be used in conjunction with a dummy load (up to 100W maximum) suitable for your transmitter.?
In addition to the load you might want to put an additional?10dB attenuator feeding the TinySA Ultra if you will be operating near that 100W load limit. That way you can use the internal attenuator to further attenuate the fundamental?frequency to keep the front end of the TinySA level low to avoid seeing false spurs.
The nice thing about the pickoff is you can easily?customize it to any RF connectors you would like to use, say SO-239's for in and out and a SMA to feed the TinySA.
Good luck!
Sam W3OHM
There is an article that was published in either QST or QEX for a 50dB sampler a while back. I think the author was Bab Larkin. It was a DIY sampler pick off and was part of a power meter project if I recall correctly. I'll look around and see if I can find it.
Sam
Sam Reaves
ARS W3OHM
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On Sat, Oct 21, 2023 at 6:42?PM Jim Campbell < jecspasc@...> wrote:
The one I have is rated at 100 watts. I got it from M3 Electronix
which has been gone for years. I did find the instructions for the
kit.
Jim - W4BQP since 1953
On 10/21/2023 5:39 PM, Matthew Rapaport
wrote:
That can handle 100 watts??? Don't know about
making your own... The 50db 100 watt pictured at the link is
$1000.00 U.S! The 40db is $900.00! Not cheap!!?
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Sam Reaves