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#1
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"Hans K0HB" wrote in message om... "Kim W5TIT" wrote But, did the FCC ever get anywhere close to seeing its use banned? I am not, remember, saying that a mode would become so unpopular or disliked on a scale such that it would be rare to find it openly being used. I am saying, however, that I believe the FCC would never regulate its ban. Spark transmissions were outlawed (as well they should have been) so the precedent exists. But spark was a transmission technology, not a mode. On a more immediate note, as relates to your discussion on AM phone, I'd have to dig out some old material to get all the facts exactly in order, but there was a petition (in the 70's?) which the I ***believe*** the FCC had moved to the stage of an NPRM to outlaw AM transmissions on the HF amateur bands. The rationale was that AM was (is?) wasteful of spectrum because SSB can convey the same message in half the bandwidth oF DSB AM phone and without those awful sounding hetrodyning carriers. The proposal narrowly missed being adopted, only because of a huge hue and cry from thousands of AM-forever hams (who drew ARRL into the fight on their side). Today you're hard pressed to find any remaining AM-ers on the band, and if the petition were re-introduced it might well be adopted due to lack of organized opposition. Most of the AM-forever crowd has moved to "forever". Yet AM is still allowed. Cheers, Bill K2UNK |
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#2
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"Bill Sohl" wrote
Yet AM is still allowed. Yes, it certainly is. But for how long? Riley Hollingsworth told a Richmond, Virginia hamfest last spring (speaking of "enhanced SSB") that deliberately operating a wideband mode in a crowded spectrum is "shortsighted and rude," may be ignoring the "minimum bandwidth necessary" rule. Now if 4.5KHz-wide signals are shortsighted and rude, then it logically follows that 6KHz-wide AM signals containing the same information are even more shortsighted and rude. He also hinted that continued complaints "WILL (my emphasis) lead to pressure on the FCC to revise the Amateur Service rules." Would you expect DSB AM to survive such revision? Cheers to you too, de Hans, K0HB |
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#3
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"Hans K0HB" wrote in message om... "Bill Sohl" wrote Yet AM is still allowed. Yes, it certainly is. But for how long? Good question, but it has been some 40+ years since SSB pretty much took over as the HF mode...and there's still no call for any ban of AM. Riley Hollingsworth told a Richmond, Virginia hamfest last spring (speaking of "enhanced SSB") that deliberately operating a wideband mode in a crowded spectrum is "shortsighted and rude," may be ignoring the "minimum bandwidth necessary" rule. Now if 4.5KHz-wide signals are shortsighted and rude, then it logically follows that 6KHz-wide AM signals containing the same information are even more shortsighted and rude. He also hinted that continued complaints "WILL (my emphasis) lead to pressure on the FCC to revise the Amateur Service rules." Would you expect DSB AM to survive such revision? Not if such DSB AM was in any way a significant percentage of use on the air. That sure doesn't seem to be the case at all, however. Cheers, Bill K2UNK |
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#4
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I wonder how many of you realise that when you are operating Single Sideband
Suppressed Carrier you are on Amplitude Modulation ?? Dan/W4NTI "Bill Sohl" wrote in message link.net... "Hans K0HB" wrote in message om... "Bill Sohl" wrote Yet AM is still allowed. Yes, it certainly is. But for how long? Good question, but it has been some 40+ years since SSB pretty much took over as the HF mode...and there's still no call for any ban of AM. Riley Hollingsworth told a Richmond, Virginia hamfest last spring (speaking of "enhanced SSB") that deliberately operating a wideband mode in a crowded spectrum is "shortsighted and rude," may be ignoring the "minimum bandwidth necessary" rule. Now if 4.5KHz-wide signals are shortsighted and rude, then it logically follows that 6KHz-wide AM signals containing the same information are even more shortsighted and rude. He also hinted that continued complaints "WILL (my emphasis) lead to pressure on the FCC to revise the Amateur Service rules." Would you expect DSB AM to survive such revision? Not if such DSB AM was in any way a significant percentage of use on the air. That sure doesn't seem to be the case at all, however. Cheers, Bill K2UNK |
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#5
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In article et, "Dan/W4NTI"
w4nti@get rid of this mindspring.com writes: I wonder how many of you realise that when you are operating Single Sideband Suppressed Carrier you are on Amplitude Modulation ?? Dan/W4NTI I wonder how many of you in here realize that you are messaging not with AM, FM, or PM but rather BM when you openly troll so? LHA |
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