[Amps] Amps Digest, Vol 252, Issue 17

[David B. Ritchie]

I had one of those. The capacitors are made of a sheet of Teflon between two sheets of aluminum. If you burn thru the Teflon under a high SWR condition (which can happen at 100W) then you can have problems. Check it. If damaged, various thicknesses of Teflon sheet are available on eBay. Use a micrometer to get the right thickness.  Good luck. 


David B. Ritchie, W6DR


> On Dec 26, 2023, at 09:00, amps-request at contesting.com wrote:
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> Today's Topics:
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>   1. Pulsing SWR Meter (Jay Sturtevant)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Tue, 26 Dec 2023 09:33:33 -0500
> From: Jay Sturtevant <k2ztdx at gmail.com>
> To: amps at contesting.com
> Subject: [Amps] Pulsing SWR Meter
> Message-ID:
>    <CALfamjswvDmvqS3mi5tTuMbqZj4y4RPWXvHrbAnQToFe59cT8Q at mail.gmail.com>
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> 
> I use a Nye Viking MB IV (4) A  antenna tuner after my Command HF 2500
> Amplifier. The antenna tuner has never had a problem and has always been
> adequate for matching any of my antennas.
> 
> I recently noticed the SWR meter in the Nye Viking tuner pulsing. The power
> meter was unaffected.  In the past, this pulse Iindicated the 9 volt
> battery powering the SWR and power meters needed replacement, however, a
> new battery did not stop the SWR meter pulsing this time.
> 
> I measured the voltage of the new battery at 9.79 volts. I made the mistake
> of not measuring the voltage of the 9 volt battery I removed from the tuner
> before I disposed of it, however, it had been in the tuner for at least 3
> years.
> 
> Your suggestions would be appreciated!
> Thanks!
> 
> Jay, K2ZT
> 
> 
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> End of Amps Digest, Vol 252, Issue 17
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