[ARC5] 60m band and SCR274 transmitters

[WA5CAB at cs.com]

Well, I wouldn't know about that.  I've never owned or used an amateur 
transceiver.  But the supressed carrier's frequency couldn't possibly be in the 
passband of the adjacent channel.  If the channel spacing was exactly 3 KC, 
then it would be exactly on the suppressed carrier frequency for the 
adjacent channel.  If the spacing was greater than 3KC (can't be less since USB 
vooice is allowed), then it'll be within the dead band.  But this is all angels 
and pin heads, anyway.  Back to the BC-458...

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 07/22/2017 17:24:51 PM Central Daylight Time, 
neilb0627 at gmail.com writes: 
> 
> >But the way that the rules were explained was that you could only or had 
> to to be legal generate the signal using the USB> channel of a SSB or ISB 
> transmitter.  If the FSK signal is generated by feeding AFSK into an SSB 
> transmitter, and receive> it with an USB receiver, you will get the same 
> results if you feed the normal AFSK into the USB transmitter or feed the
> > inverted AFSK into the LSB channel.
> 
> >And absent residual carrier to give it away, no one would be the wiser.
> 
> And therein lies the problem. No amateur transceiver on the market 
> perfectly suppresses the carrier.  If you're using LSB to generate a CW or digital 
> signal, you're certainly radiating the suppressed carrier at some level, 
> albeit low, and it may be on or very close to, the assigned channel carrier 
> of some other service.
> 
> Depending on your choice of frequencies, it may even be in the passband of 
> that adjacent service.
> 
> 73 de Neil ZL1ANM
> 
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