I have put together some notes here about This adjustment is done at your own risk. Also take note that excessive adjustment of TC1001Ĭan cause the oscillator to stop, or to fail to restart. The capacitor TC1001 (dead centre of picture below – underside of the FT-847). If you want to adjust the master oscillator in the FT-847, this can be done by gently turning Whether the frequency is close enough is up to the reader to decide. The error is much smaller at HF, and is likely to be almost Spectran, or the waterfall screen in WSJT.Īlways make this check at the highest possible frequency that you have aerials available.
The audio frequency can be checked by one of a number of soundcard applications such as Wait for the beacon toĬycle through its transmission and observe the period of steady carrier. Using USB reception, tune to where your radio frequency readout is 1kHz, exactly, below the transmitter. GB3NGI and GB3VHF fall into this category. It still requires the reception of a beacon, and preferably it’s one with a reliable, However, there’s a better way, and an easier way to check the frequency.
Misleading to use the DF readout in WSJT.
It turns out that the JT65 offset for beacon stations is not standardised, and it can be quite And cross referencing these results to the GB3VHF beacon on 2m left me more confused. My initial attempts to check its frequency accuracy on 70cms, using the GB3NGI beacon as a source and looking at the results of its JT65B transmission did not I had found out the hard way that it was around Recently, I found a need to ensure that my FT-847 was as close as possible to the correct frequency on 70cms.
0 kommentar(er)
