Re: uBitx V6 - Transmit logic in firmware
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QRSS comes the closest of no side bands. It is pure 1 frequency switching on and off or changing up or down by 5Hz every 3-6 seconds.
Earl Cox? KB5UEW? Reply or E-mail me at:? kb5uew@...
On Thursday, July 29, 2021, 08:43:59 AM MDT, Bill Cromwell <wrcromwell@...> wrote:
Hi,
I frequently abuse my transmitters or transceivers as signal generators
(finals disabled). It is very handy to have the radio operate at
whatever frequency I need without some artificial restriction. I *know*
what frequencies I am licensed to use on the air and I managed to stay
in those limits for a very long time using many different transmitters.
None of our signals has? a zero bandwidth no matter how you think of
them. Yes, Virginia, that includes CW and WSPR. Setting the center of
your signal on 7.00000 MHz is sure to have the lower frequency part of
the signal outside the band. You might 'get away' with it if nobody
notices. Most of us have better things to do than play radios police but
there are some capable people who are paid to do that. Don't give them
something to 'find'. QSY to maybe 7.0001. For voice go to 7.004 (some
places can use voice anywhere in the bands (as far as I know). Keep the
margins for regulatory sub-band limits, too.
73,
Bill KU8H
bark less - wag more
On 7/29/21 12:53 AM, vu3gao@... wrote: > Hello OMs, > > While tinkering around with uBitx v6, I observed following: > > 1) VFO will take frequency from 5Hz to max 999.999.999. Expected to > have 3Mhz-30Mhz ring fence. > 2) Set transmits from as low as 500Khz to 35Mhz. Expected Tx > restriction within HAM bands. > 3) When dial is set to 7.000 Mhz, There is no output in Tx mode (Both > CW/ SSB). Tune little above or below there is output in TX mode. Seems > some filter switch logic issue. Expected to have Tx on band edge. > > Note: Firmware used during above observations: Reed N R1.51. uBitx V6 > users, please try to reproduce the above observation and revert. > Hoping code enhancement from Reed or Ashar towards excellent hardware. > > Thanks > Nitin William > VU3GAO >
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