VK Logger Ham Radio Forum Archive

Just a quick couple of comments: - The RFzero can be used as GPSDO for the RX when not transmitting - According to Mike, G8NXD, the RFzero is the most stable Si5351A implementation he has seen, and from what I understand he has seen them all So an RPi (decoder and management) + RFzero (TX + GPSDO)+ ...

Hello Nigel The idea of muting your RX may be a good idea. Another idea could be to place the WSPR transmitter in a different location with remote control - if needed, but a bit more complex. In either case an RFzero https://www.rfzero.net/ can be used on 2 m WSPR and in fact up to 23 cm without usi...

Hi I can't say why the RA30H0608M died. But I can think of two reasons, yet there may be many more. Second Harmonic One reason could be the level of the second harmonic that is only about -5 dBc. If the power module is followed by a low pass filter, which is highly recommended, the power returned to...

Hello

At The World's Oldest Beacon OZ7IGY http://www.oz7igy.dk we use Big Wheels a lot with great satisfaction.

Bo, OZ2M

Hi Here are some meteor (scatter) fundamentals: http://www.uksmg.org/content/deadband.htm I have made thousands MS QSO, both from home and on DX-peditions, since my first MS QSO in 1982. So feel free to ask. Not so much on 6 m but a lot on 2 m and 4 m: http://rudius.net/oz2m/sqr144mhz.png Here is my...

Hi The OZ7IGY 40 MHz beacon has been on air since 2007: http://www.oz7igy.dk However, the "allocation" is for land mobile radio (LMR) only which means that the license is not a classic amateur radio beacon license but a LMR license that has to be renewed and paid for each year. Currently i...