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Stryker Sr 955hpc high swr on ssb?

What! Checking SWR on SSB? I have never done that. I do not know anybody that checks SWR with SSB. I have been in radio since 1968 and this is the first time I have even heard of that being done. AM, FM, and CW yes, SSB no way Jose.

I know it's an old thread but I had to laugh when I first saw that as well. You never check SWR in SSB mode.
 
Amazing can you instruct all of us on how to check swr when in ssb mode?
 
Of course, turning the mike gain to zero in SSB transmit should get you ZERO on the external wattmeter.

If you do show a steady or fluctuating meter reading, it leaves two possibilities.

1) The SSB mike audio has a buzz, hum or squeal on it, and that's what drives up the wattmeter, spurious audio in the sideband modulator.

2) The driver and/or final stages are oscillating. If there is enough accidental RF feedback in the power sections of the transmitter, it will produce its own, separate RF signal. A frequency counter placed in line would show a reading that is nowhere near the selected channel frequency.

My bets are on option two. This is yet another odd symptom that can be identified at a glance with a spectrum display of some sort. Don't have to have a multi-kilobuck lab instrument, although they're quite nice. More like a 30-dollar RTL USB dongle plugged into your computer running free SDR software. Most of them go down to about 25 MHz without an adapter like the NooElec Ham It Up.

A cheap SDR is not a bad spectrum display.

These guys are a good place to check that out. https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/

73
 
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If it has talkback and or echo id suppose that would work too?
 
This high dollar meter will give instant VSWR and power output in AM and SSB at all times.
These are the meters I use ......

https://www.arraysolutions.com/pm2-3k-n

PM23kso.jpg
 
The problem I had with mine bumping the Swr protection on SSB when power turned up past 40 watts was grounding issues within the radio. Sent it to the recommended shop by Stryker Key radio repair and they went over all the internal grounds they say and it did fix the problem I can run the radio full 80 watts on SSB now without it hitting the Swr protection
 
guys this is what i found on ssb swr issue on striker 955 looks like on ssb has a derty or harmonic issue that couse the problem,ok what i did i adjust the anl ssb inside that clean everything up including the swr issue ,you would loose a bit of watts but its ok now you have about nice 50+ clean watts not 80w no more swr issue on ssb.
 
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