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Basic QMX+ Queries


 

Howdy Fellow Kids,

I am looking at QMX+ for my next friendly little radio. A few basic questions I didn¡¯t find on site, I beg pardon¡­

Is the SDR receive frequency ability good all through HF? What frequencies MW too? Any odd gaps? How about for tx?

Does anyone use this for QRSS? What kind of duty cycle can it take for that?

I am pleased as punch to see the great Hans is adding SSB. I¡¯ll be eager to see how PSK modes and ardour/vara work out. If anyone has notions on that, please also let me know?

Tnx es 73,
Brighid
KF7RHB


 

On Fri, Oct 11, 2024 at 11:40 AM, Brighid wrote:
Is the SDR receive frequency ability good all through HF? What frequencies MW too? Any odd gaps? How about for tx?
You can set it to tune only the defined amateur bands, or to tune general receive down to 1.5MHz.? Note that it does use bandpass filters for the receiver, designed for the amateur bands, so receive performance may suffer on frequencies well outside amateur bands.
By default, it is set to transmit on only the amateur bands, but you can disable the block to transmit anywhere - of course you should NOT transmit anywhere you are not licensed.? And although it is easy to set this so you can transmit in the CB bands, it technically is illegal to do so, since CB requires FCC type-accepted transmitters (and QMX does not do AM nor yet SSB, so you wouldn't be able to contact anyone).? Note also that the transmitter uses low-pass filters designed for the amateur bands, so transmitting outside those bands may also have performance issues, and may not be properly filtered for spurious emissions and harmonics.


 

On Fri, Oct 11, 2024 at 09:16 PM, Stan Dye wrote:
And although it is easy to set this so you can transmit in the CB bands, it technically is illegal to do so, since CB requires FCC type-accepted transmitters (and QMX does not do AM nor yet SSB, so you wouldn't be able to contact anyone).?
FCC rules only applies in US,
People in Europe use 11m 27.245 JS8?
but you can use QDX, QMX and QMX+ to receive 11m JS8 in US and publish it to pskreporter
some do

73 DE muhsin TA1MHS