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| Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment. |
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3rd Oct 2012, 12:18 pm
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#1 |
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Pentode
Join Date: Dec 2008
Location: Redditch, Worcestershire, UK.
Posts: 196
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WELZ SP300 SWR meter circuit wanted
I have a faulty Welz SP300 SWR/Power meter. Does anyone have a circuit they could copy and let me have. Cant find anything on the web that does not require payment for it.
Thanks in anticipation Chris G0EYO |
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12th Jun 2014, 12:47 am
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#2 |
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Retired Dormant Member
Join Date: Jun 2014
Location: Neston, Wirral, Cheshire, UK.
Posts: 1
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Re: WELZ SP300 SWR meter circuit wanted
Chris..
Saw this old posting from you. I wonder if you got a response??. I too have a faulty SP300 which doesnt work on the UHF input/outputs but OK on the other two. Most odd. Any help appreciated Gordon G8MMM |
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12th Jun 2014, 7:48 am
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#3 |
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Pentode
Join Date: Dec 2008
Location: Redditch, Worcestershire, UK.
Posts: 196
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Re: WELZ SP300 SWR meter circuit wanted
Hi Gordon
I never did get a circuit but I did manage to find a broken lead which fixed it although there is still a problem with the lower frequency range. Struggling to remember what the fault was, may have been an earth return. Worth taking apart just to see how the thing works, it self powers itself on Power measurements. Regards Chris G0EYO |
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