Saturday, November 17, 2012

Feld Hellschreiber QRP beacon test

Stephen, VK2BLQ, and I continue to experiment with Feld Hellschreiber and I'm pleased to say that next Sunday, November 25th, we'll be presenting to the ARNSW Home Brew group meeting at Dural.

Today I did a test transmission with this little setup:


I've recorded "this is a test transmission from vk2tpm" on a digital recorder which is driving the simple audio keyer to key a two transistor QRP CW transmitter on 7027kHz.


Stephen is about 10km away as the crow flies:



He demodulated me like this:


Not great but amazing considering my transmitter. Come along next Sunday and we'll try to demonstrate across the room.

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