SR-150 Injection Voltage
This question mainly for Walt. Finally starting on the first of two radios here and question the voltage reading for V6. The original manual only calls for 7 volts but in your instructions, Walt, you
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edward schumacher
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#29949
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Hallicrafters R274 parts wanted
I am looking for a Hallicrafters R274? parts radio, or individual parts, im looking for the entire tuning gear assembly, including the main dial showing the frequencies,,, let me know what you might
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Kim Ullom
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#29947
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Re: Hallicrafters HT-9
LOL, a early and a late HT-9 would be good but even better would be having coils and tuning units to put one of the two on the air. 73, Tom N5AMA
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Tom Smith
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#29946
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Re: Who made these HV cap kits for the PS2000?
Lead was added to gasoline around 1922, not long after it's discovery, as an easily to add octane.? So any car built after the introduction of the Ford Model T would have used leaded gas.Regards,Jim
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Jim Whartenby
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#29945
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Re: SR2000 load cap
Thanks Mike, I couldn't remember the name of the tape. It's a bronze color and very impressive as an insulator. I was going to use it if the cap in the SR2K I'm restoring had a similar problem. 73
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Dave Jordan
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#29944
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Re: SR2000 RF drive level
Sounds like a simple problem, like a bad drive control pot needing major cleaning or replacement.
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Bruce Collins
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#29943
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Re: SR2000 load cap
Suggestion ¨C if you can find a very little bit of Kapton tape. Kapton is rated 100's of kV/mm. I¡¯ve used it in high power (10 kW and above) tube-type FM broadcast transmitters with great success.
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Mike Langner
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#29942
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Re: SR2000 load cap
I¡¯ve have some very thin, thinner than bond paper high voltage insulation tape with one side sticky. I think it¡¯s rated at 5kV. Might be worth a try. I can mail you a few inches if you decide to
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Dave Jordan
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#29941
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Re: SR2000 load cap
I think I am the only guy in the world that has now spent around 15 hours of his life attempting to FIX the factory cap.? 4 hours today alone. I took it all back apart and hand bent/Straitened EVERY
By
W7WRX
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#29939
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Re: HT-44 noise on microphone input
Most if not all ham transmitters are made to work from hubalanced, high impedance microphones. If the shield is not connected at both ends the microphone is open circuited. No wonder its noisy. Not
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Richard Knoppow
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#29938
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Re: HT-44 noise on microphone input
Yes, regular? old unbalanced high impedance mic line using 1/8" coax (RG-172?)? This HT-44 was clearly stock with no mods and the coax mic line is grounded at one end only (at the tube end, 15" from
By
Floyd - K8AC
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#29937
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Re: HT-44 noise on microphone input
We're talking HT-44 here.? I don't believe I've ever seen a balanced two or three wire microphone line inside an American made transmitter.? Might have missed something along the line.
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Floyd - K8AC
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#29936
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Re: Hallicrafters HT-9
One more HT 9 factoid. Early ones have square meter bezels and the later ones have round meter bezels. You need at least one of each.
By
n7qmm25
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#29935
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Re: Hallicrafters HT-9
Tom, If you're an ARRL member or otherwise have access to the March 2001 issue of QST, you might want to read an article I wrote about Bill Halligan's "Chevy-Buick-Cadillac" marketing strategy to
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Michael OBrien
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#29934
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Re: Seen at the Raleigh Hamfest today
Nice photos thanks to Nick. I like the layout-nice and neat and not stuff just piled up. 73 Scott N6CIC
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T. Scott Griffin <scottandalene@...>
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#29933
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Re: Who made these HV cap kits for the PS2000?
Jim, re: ¡° to preserve¡± ¡ESR ¡etc To preserve to me means to protect or maintain an item so that it is useful. preserve .. From some dictionary : to keep safe from injury, harm, or destruction
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don Root
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#29932
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Re: Seen at the Raleigh Hamfest today
DonThere is a link below the photo to the rest of the items at the 'fest. Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy
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Jim Whartenby
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#29931
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Re: Seen at the Raleigh Hamfest today
It was a nice one. Didn't notice if it sold. John K5MO
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John K5MO
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#29930
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Re: Seen at the Raleigh Hamfest today
Jim, Well how did you get the picture? you are just teasing us, and trying to make us envious!
By
don Root
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#29929
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Re: Who made these HV cap kits for the PS2000?
Of course if you want a really low ESR cap don't use an electrolytic. It is possible to obtain fairly high values of capacitance and voltage in plastic film caps. Virtually no ESR. Will they filter
By
Richard Knoppow
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#29928
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