AM in Amateur Radio 3870Kc
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I can smell the tubes and the old vintage speaker paper right through the screen! I have an old Hallicrafters s-38b that unfortunatly died on me a few months back, but man, there's nothing like listening to a real tube radio and some real radio operators.
Nice vid, man!
2 years ago 4
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I got into amateur radio in the late 1960's and I kind of miss the old AM days! Most of the voice activity back then was still on AM mode and it was always a pleasure to listen to! Thanks for posting this video!
73, Bill, KI7F
Denver, Colorado
1 year ago 2
All Comments (65)
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if anyone has a R-390 they want to get rid of, let me know. KB8GAQ.
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I love the way that old radio looks. I am afraid I wouldn't know where to start operating something like that. Those were long gone by the time I got into ham radio. I wish my hf rig sounded that good.
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I love the AM signal but just wish I had the room and time. Cool setup! One day, one day!
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ＶＹ ＦＢ ＲＩＧ！
ＤＥ・・ＪＨ４ＭＧＡ ＪＡＰＡＮ。
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NOTHING LIKE A GOOD AM SIGNAL ! DE K9IOU
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Old Radio but the nice quality....i love tube vakum....
73 de YD0NVU
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In the early 70's the sp-600 was my first receiver . with a home made single tube tx I did some nice qso in AM. This is a very nice (and heavy) rig.
73,
Micha, 4z4km
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I couldn't read it, what receiver model is that.? It sounds awesome!
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maybe i posted before, but this a setup id like to own. cheerio and congrats. ct2izo
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@punishedexistence So can I! Wish I had an old AM rig with tubes! Be neat to find an older Hallicrafters or Hammarlund rig!
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BTW , What is below the 600 in the rack?
ttyradio 2 years ago
That's a BW-66E, an RCA modulation monitor used to track the audio level in an AM transmitter. It also has an audio output channel with a very clean, low distortion signal to view on an oscilloscope or to feed an audio amplifier. This gives a more accurate sense of how a station's transmitter is sounding, compared to typical AM receivers, then or now.
NTSC1080 2 years ago
So do you think that tube receivers are more sensitive than solid state receivers?
hrbear 2 years ago
Sensitivity is about the same. Other factors make tube radios sound better, in my opinion, than most solid state receivers. For example, the SP600 establishes its selectivity more gently, and its amplifier circuitry has less noise and distortion.
NTSC1080 2 years ago
The R390 is significantly better than the SP600. It can hear a more wholesome chunk of signal at its maximum selectivity setting. Shown is an R390A. The mechanical filters undercut the audio quality but their square-wave sort of rolloff make the "A" more practical when conditions are congested.
NTSC1080 3 years ago