Hello Ron,
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Yes you are correct they don't.
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I tried this by just changing Band and switching aerials to match, it seemed OK, but looking on the scope with a D/L it doesn't switch. Sorry for the confusion
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73
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Ian G4GIR
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----- Original Message -----
Sent: 01/07/2024 21:58:34
Subject: Re: [QRPLabs] QMX Preset Problem
Just tried that Ian and the filters did not switch.?
Ron
What does work is changing band by pressing and holding then rotating the ?TUNE button till getting to the MHZ digits,?then selecting the Band, the correct LPF/BPF get selected. Except of course you can't select 160m using that method also when switching off and on again it doesn't remember the band.
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?Whilst on the subject of Band Selection, does anyone find it a PITA to QSY from 10m to 12m etc. All those double presses!! I figured the Presets would help solve this but with the BPF/LPF selection anomaly ?there is no choice. Could the band selection method be changed? In fact the above method is quite quick but could be easier if you didn't have to hold the TUNE knob in. Maybe 3 quick presses?to select the MHz digits??
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73
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Ian G4GIR
----- Original Message -----
Sent: 01/07/2024 19:37:35
Subject: Re: [QRPLabs] QMX Preset Problem
The other side of the coin is even worse. If you select the 20 meter band by double clicking the volume knob, then use the preset to select 80 meters, the filters stay at 20 meters and all the harmonics of 3.5 MHz show up in the transmitter output up to the cutoff frequency of the selected filter. It's probably best not to use presets except for frequency changes within the band selected by the volume knob until this is corrected.... Ron
