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Topic: Lapwing support of UHSDR (Read 8747 times)
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SP9BSL
positron
alter Hase
 Offline
Posts: 443
 
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Re:Baubericht: UI mit 480MHz STM32H743ZIT6U
« Reply #16 on: 24. October 2019, 17:20:40 »
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This is caused by frequency calculation in touchscreen function, probably transverter offset not added to freq calculation. AFAIK users not frequently uses transverter mode due to mcHF mixer issues. Make "to do" list and me or other correct this in spare time.
@Andreas: yes, this can be of course, first we need to define structure for RF hardware of our boards. I'm sure, this will happen quite soon 
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| « Last Edit: 24. October 2019, 17:23:49 by SP9BSL » |
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73 Slawek
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DB4PLE
positron
Urgestein
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Posts: 1278
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Re:Baubericht: UI mit 480MHz STM32H743ZIT6U
« Reply #17 on: 24. October 2019, 20:58:04 »
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Hi,
out of curiosity I did also an attempt to add LAPWING support to the UHSDR firmware, following my own recommendations I posted here.
Looking at the current amount of changes, I don't see why we could not integrate this into the normal build.
See here: https://github.com/db4ple/UHSDR/commit/14367aadc05a77fce8f1dd84694c4629feb86f47
A couple of things could be a little bit more refined, such as the frequency display (we should leave less space around the dot separating the 3 digit groups). But this would also be a benefit for the non-Lapwing builds.
Most notably the calculation of the Si570 frequency from the dial frequency (Si570_translateExt2Osc) in osc_si570.c is not correct, but Artur should be able to provide the correct formula. Once this is done, it should more or less work OOB.
Of course one has to disable all transverter settings, as this is a native 23cm configuration. It is also necessary to set the PA calibration value for 23cm @ 5W and FULL.
73
Danilo
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DB4PLE
positron
Urgestein
Offline
Posts: 1278
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Re:Baubericht: UI mit 480MHz STM32H743ZIT6U
« Reply #18 on: 25. October 2019, 06:13:37 »
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Hi Artur,
that is in fact the formula I already used.
@DF8OE: Shouldn't we separate this discussion from the original Baubericht?
73
Danilo
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