Orrin, I expect that if you continue in your journey in software radio you will find that a solid 10Mhz reference to be a good thing to have in general. (which you can use to drive the HackRF). I ended up getting an RF signal generator from Crowd Supply ( https://www.crowdsupply.com/era-instruments/erasynth) which works really well for this and I can use it with all of my SDRs in addtiion to the HackRF. A friend of mine recommended this one ( https://www.tindie.com/products/AnalysIR/10mhz-ocxo-frequency-standard-module-or-kit/) which is basically $77 when you get all the parts and it is assembled) so lower cost but equally movable from SDR to SDR.
Cheers, --Chuck On Tue, Jun 12, 2018 at 3:33 PM, Orrin Winton <orrin.win...@gmail.com> wrote: > Hello folks, have had my HackRF for about a week and am going thru > Michael's tutorials & other tutorials. Love this device. > > Are the eBay items described as "New External TCXO clock PPM 0.1 for > HackRF One GPS Applications GSM/WCDMA/LTE" for $10-12 the appropriate part > to buy? (noob here) > > Or can some similar item be bought that has SMA jacks on it and can be > connected via cable to the jack on the rear of the HackRF? > > The $10 clock looks like it'll require leaving the top half of the case > off, is why i ask. > > At 434 MHz doing hackrf_transfer i'm getting 700 to 1000 hz drift > (downwards in freq) on a replayed CW signal, in ten minutes, which (if i'm > calculating this correctly) is 1.6 to 2.3 ppm. > > I'm being careful to use the correct antenna on the HackRF, keep gains > low, and use low xmit power (2W) on my amateur transceiver across the room > (to record an rf_transfer). Possibly i should put an attenuator on the 2W > radio. > > Thanks for comments. > > Orrin in NE Calif. > > > _______________________________________________ > HackRF-dev mailing list > HackRF-dev@greatscottgadgets.com > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > >
_______________________________________________ HackRF-dev mailing list HackRF-dev@greatscottgadgets.com https://pairlist9.pair.net/mailman/listinfo/hackrf-dev