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Author Topic: WANTED: PDM coil/filter set from a AM tube PDM broadcast transmitter  (Read 2027 times)
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K1JJ
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"Let's go kayaking, Tommy!" - Yaz


« on: December 17, 2020, 02:31:26 PM »

I realized my PDM coils will be too big to fit in a new PDM tube rig I'm building.  Does anyone have the PDM coils or complete filter  they might like to sell?   Some are layered and quite small. Some use ferrite and some use air.  I will put them to good use!

If you know of any BC surplus places that might have one, please let me know.

Thanks.

xxxK1JJ@comcast.net    (remove the "xxx")

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Use an "AM Courtesy Filter" to limit transmit audio bandwidth  +-4.5 KHz, +-6.0 KHz or +-8.0 KHz when needed.  Easily done in DSP.

Wise Words : "I'm as old as I've ever been... and I'm as young as I'll ever be."

There's nothing like an old dog.
K1JJ
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"Let's go kayaking, Tommy!" - Yaz


« Reply #1 on: December 17, 2020, 02:32:06 PM »

.
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Use an "AM Courtesy Filter" to limit transmit audio bandwidth  +-4.5 KHz, +-6.0 KHz or +-8.0 KHz when needed.  Easily done in DSP.

Wise Words : "I'm as old as I've ever been... and I'm as young as I'll ever be."

There's nothing like an old dog.
K1JJ
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Posts: 8893


"Let's go kayaking, Tommy!" - Yaz


« Reply #2 on: December 17, 2020, 02:58:51 PM »

.
Logged

Use an "AM Courtesy Filter" to limit transmit audio bandwidth  +-4.5 KHz, +-6.0 KHz or +-8.0 KHz when needed.  Easily done in DSP.

Wise Words : "I'm as old as I've ever been... and I'm as young as I'll ever be."

There's nothing like an old dog.
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