KMSDR - Reverse Beacon
Posted: Fri Mar 07, 2014 6:38 pm
Terry has recently installed a Raspberry Pi at GB3KM.
New features include a waterfall display of the Narrowband segments of various uWave bands, similar to the various Web SDR's about but no actual decoder(maybe one day!).
The use is mainly for Tropo monitoring but also does a good job at reminding us when there's a contest on!
This is done using a switchbox for the various IF/RF connections into an RTL-SDR dongle as the receiver, no extra antenna were installed as KM already had antennas for these bands available.
IF's were used for 13/3cm and direct antenna feed tap used on 70/23cm.
Frequencies covered are the Beacon and SSB segments of the band.
Band - Antenna:
70cm - Halo
23cm - Yagi South
13cm -Alford Slot
3cm - Slotted WG
Please feel free to try out your equipment and see if KM can see your narrowband signal on the screen!
Rob
New features include a waterfall display of the Narrowband segments of various uWave bands, similar to the various Web SDR's about but no actual decoder(maybe one day!).
The use is mainly for Tropo monitoring but also does a good job at reminding us when there's a contest on!
This is done using a switchbox for the various IF/RF connections into an RTL-SDR dongle as the receiver, no extra antenna were installed as KM already had antennas for these bands available.
IF's were used for 13/3cm and direct antenna feed tap used on 70/23cm.
Frequencies covered are the Beacon and SSB segments of the band.
Band - Antenna:
70cm - Halo
23cm - Yagi South
13cm -Alford Slot
3cm - Slotted WG
Please feel free to try out your equipment and see if KM can see your narrowband signal on the screen!
Rob