05-18-2018, 09:09 PM
Quote "Prior to the introduction of the RA17, previous radios had typically used a free running variable frequency oscillator. Radios like the AR88 of 1940s vintage were still widely used and provided excellent performance in many other respects could not compete with the RA17.
Although free running variable frequency oscillators might be acceptable for low frequencies below about 3 or 4 Mc/s, as they reached frequencies towards the top of the range or 30 Mc/s or so, they would need to be periodically retuned, especially when receiving Morse or single sideband."
This seems like a bit of a stretch to me, that may be true with the cheap sets with a pentagrid converter, but not with something like a National HRO, or Hallicrafters SX series set, it sounds like the article was written by a bit of a "fanboy". The older sets would not work with SSB perhaps but with code it was never an issue.
Regards
Arran
Although free running variable frequency oscillators might be acceptable for low frequencies below about 3 or 4 Mc/s, as they reached frequencies towards the top of the range or 30 Mc/s or so, they would need to be periodically retuned, especially when receiving Morse or single sideband."
This seems like a bit of a stretch to me, that may be true with the cheap sets with a pentagrid converter, but not with something like a National HRO, or Hallicrafters SX series set, it sounds like the article was written by a bit of a "fanboy". The older sets would not work with SSB perhaps but with code it was never an issue.
Regards
Arran
