SDRtrunk and Airspy help
- Thread starter Bonkk083
- Start date
Try manually setting the center frequency
855.9375
855.9375
Good luck with that though. As far as i know, Airspys and RSPs suffer from the same thign as RTL dongles -- rolloff of performance at 10% of the band edges.
So a 10 msps Airspy will do 8 Mhz without performance loss. If your spread is more than 8 mhz, expect the 1 mhz on either side to possibly be significantly lower in performance... possibly even dismal.
I always plan for my Airspys to do 8 mhz of work, and then I'll get an Airspy mini or RTL or whatever i need to cover the rest.
Are you able to confirm that the lowest frequency is actually being used? It’s definitely pushing the limits and as was previously suggested, you might need to add another dongle.
I usually have to program "dummy" channels on the lower and upper end of the tuners bandwidth to keep it aligned.
Like if my control channel is 853mhz, I'll put a dummy NBFM channel at 848mhz and another at 858mhz, then I'll have them start sequentially so it'll lock on CC, shift to cover lower end dummy channel, then shift again to the upper end, thus locking it in position.
update: I forgot that recent versions of SDRTrunk have a MIN /MAX frequency in the tuner menu, this will achieve the same results.
Like if my control channel is 853mhz, I'll put a dummy NBFM channel at 848mhz and another at 858mhz, then I'll have them start sequentially so it'll lock on CC, shift to cover lower end dummy channel, then shift again to the upper end, thus locking it in position.
update: I forgot that recent versions of SDRTrunk have a MIN /MAX frequency in the tuner menu, this will achieve the same results.
You will need an additional sdr.
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