It wouldn't be a good idea to depend on the transceiver. If you are
operating USB, for example, you have to keep the (suppressed) carrier
frequency several kHz below the top of the band so your sideband will be
inside it; same for LSB and the bottom of the band. Even in CW there is
a consideration of bandwidth, although the K3 series rigs have very
narrow CW signals. But it would not be prudent to operate exactly on the
band edge.
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
On 23 Jun 2015 03:20, Fred Jensen wrote:
They also change from time to time.
It always was your responsibility to make sure you were transmitting
within the ham band. I know it was my responsibility because I still
have the "Pink Slip" taped to the back of one of my log pages from that
era, more than one stage of my HB transmitter had decided to become an
oscillator. Sadly, there was no firmware in my HB open-chassis 807
transmitter to warn me. :-)
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org
On 6/22/2015 3:09 PM, Don Wilhelm wrote:
Part of the requirements for obtaining a license in the US is to know
and abide by the limitations of our license class - you just have to
look at the frequency display - it has been that way on all HF
transceivers that I have encountered and many of those were 'wide open'
and would transmit on any frequency that they were tuned to. It is the
responsibility of the operator to know where he is transmitting. I
think it is an unwise thing to try to depend on the transceiver to tell
you that you are out of your band limits, but then I am an 'old timer'
with 'old thinking' - I would not want my transceiver to try to tell me
I am out of my band limits - I reserve that for my own judgement.
73,
Don W3FPR
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