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Sonsivri > Electronics > Projects (Moderators: bbarney, pickit2) > Directional coupler in HF
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folkeu
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« on: January 05, 2023, 08:18:29 20:18 »
Hello,
I am looking for a tutorial to make a directional coupler in order to capture the power emitted and the SWR of an 88-108MHz FM transmitter up to a maximum power of 30watts.
Folkeu
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h0nk
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« Reply #1 on: January 06, 2023, 04:24:43 04:24 »
Hello folkeu,

look for "Minicircuits TDC Directional Couplers".

They can do only 10 W Sad, but perhaps they have some
higher powered devices.
I successfully used the TDC-10-1 and TDC-10-2 for measuerments
with my spectrum analyzer.

The ARRL handbook/ARRL antenna handbook also have some suggestions.


Best Regards
« Last Edit: January 06, 2023, 04:51:46 04:51 by h0nk » Logged
ta3as
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« Reply #2 on: January 06, 2023, 01:43:47 13:43 »
This construction is so simple.
Please have a look https://www.armag.vk6uu.id.au/1969-november-AR.html
You can see all of the details at "Frequency independent directional wattmeter and swr meter" article
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