The S-38, like many BC receivers at the time, was an "AC/DC" rig, with the chassis potentially hot if you weren't careful. Nearly eliminated myself in the basement trying to attach a Q-multiplier to it. This was better than 60 years ago.
George, W3HBM On 1/26/2019 7:38 PM, John Simmons wrote: > Speaking of 110VAC antenna relays, I reached in the back of my Novice > rig and touched the bare 110VAC contacts on the antenna relay. Youch! I > was a little more cautious after that. Bare contacts wouldn't be allowed > today in commercial gear. > > 73, > -John NI0K > >> John Oppenheimer <mailto:j...@kn5l.net> >> Saturday, January 26, 2019 4:03 PM >> Took a look at Heath's HW-16 design. Quite ingenious: Using the PA >> cathode bypass capacitors and current through a diode to shunt the >> receiver front end during transmit. Early diode QSK operation. And a >> neon bulb relaxation oscillator, using grid block keying voltage, for CW >> sidetone. >> >> I enjoy putting vintage stuff on the air for SKN. Heath did not >> integrating their separates well back in the day, relying on 110V >> antenna relays. I may have some DX-60A/HG-10B/HR-1680/HS-1681 ideas for >> next year! >> >> John KN5L >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jasimm...@pinewooddata.com >> Charlie T <mailto:pin...@erols.com> >> Saturday, January 26, 2019 12:53 PM >> The first of that type was, I believe a Hallicrafters SR-75, which was >> quite >> unique for its day. >> >> If I remember correctly, it was basically an S-38 receiver that used the >> audio output tube as a single stage crystal oscillator & RF out function. >> Not what you'd call a stellar performer, but it was a first and >> self-contained in a package which was same size as the S-38. >> >> 73, Charlie k3ICH >> >> >> >> >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net >> <elecraft-boun...@mailman.qth.net> On >> Behalf Of Kevin Anderson via Elecraft >> Sent: Saturday, January 26, 2019 9:13 AM >> To: elecraft@mailman.qth.net >> Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS >> >> Hopefully not to belabor this too much (or exceed a cutoff on the >> conversation), the HW-16 was not a transceiver in the modern sense of >> shared >> circuitry throughout, but was a transmitter and receiver in the same >> cabinet >> that shared the same antenna connection and had the necessary cutoff and >> receiver protections on transmitting. The knob and dial you see is the >> receiver. The transmitter in the radio was CW-only, rock-bound on >> 80-40-15 >> meters only when barefoot with just the HW-16. It took the external HG-10 >> or -10B VFO (or similar grid-keyed VFO) to get you flexible >> transmitting not >> involving crystals. The receiver circuitry was on a circuit board in one >> half of the case and the transmitter circuitry was point-to-point >> wiring in >> the other half of the cabinet. >> >> A used HW-16, joined later by a HG-10B VFO, was my first radio when I got >> licensed in 1993 and used for a couple of years until it got upscaled >> by a >> used Ten-Tec Century 22. >> >> Cheers/73, >> Kevin, K9IUA (then KB9IUA from 1993 until 1999) >> >> --------------------------------------- >> Kevin Anderson, Dubuque IA USA, K9IUA >> k9iua (at) yahoo (dot) com >> --------------------------------------- >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message >> delivered to pin...@erols.com >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jasimm...@pinewooddata.com >> Kevin Anderson via Elecraft <mailto:elecraft@mailman.qth.net> >> Saturday, January 26, 2019 8:12 AM >> Hopefully not to belabor this too much (or exceed a cutoff on the >> conversation), the HW-16 was not a transceiver in the modern sense of >> shared circuitry throughout, but was a transmitter and receiver in the >> same cabinet that shared the same antenna connection and had the >> necessary cutoff and receiver protections on transmitting. The knob >> and dial you see is the receiver. The transmitter in the radio was >> CW-only, rock-bound on 80-40-15 meters only when barefoot with just >> the HW-16. It took the external HG-10 or -10B VFO (or similar >> grid-keyed VFO) to get you flexible transmitting not involving >> crystals. The receiver circuitry was on a circuit board in one half of >> the case and the transmitter circuitry was point-to-point wiring in >> the other half of the cabinet. >> >> A used HW-16, joined later by a HG-10B VFO, was my first radio when I >> got licensed in 1993 and used for a couple of years until it got >> upscaled by a used Ten-Tec Century 22. >> >> Cheers/73, >> Kevin, K9IUA (then KB9IUA from 1993 until 1999) >> >> --------------------------------------- >> Kevin Anderson, Dubuque IA USA, K9IUA >> k9iua (at) yahoo (dot) com >> --------------------------------------- >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jasimm...@pinewooddata.com > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gkid...@ilstu.edu ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
