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Saturday 21 November 2015

Another APRS update

After soldering an offcut of Ethernet cable into the auto-key interface I originally built for the CB gateway (including removal of the relay as the Leixen VV-898 can RX without a mic connected), I managed, after some trial and error, to successfully transmit an APRS packet which was  received by MB7USD, the antenna was still indoors and power was my max allowed 10 watts (though cable losses and SWR may have caused it to be reduced some at the antenna itself, before actually transmitting a packet I located a clear frequency to check the key circuit was working, it was working just fine.

After this test I removed the interface line from the mic socket, I then moved the rig so it is now located on top of my Grant II to make sure I had some desk space, this then amounted to a recheck of the SWR to make sure it was the same, it is, and all I need to do is finish the antenna (I was thinking Sugru for the centre) and hang it up outside, I may also cut the coax shorter as it is RG58 and on 2-meters it is a bit lossy for my liking.

So, I can now transmit on the APRS frequency from home, just need to do that for the car but as I mentioned in my previous post I can use my mobile phone as a stop-gap

Another day and another success in Amateur radio

73 de M6RSQ

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