17 Oct 2009

My new 500kHz DX record - 210kms

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Just been reported by G3YMC in Bracknell, which is 120kms away and my 6th station to report me and my best DX to date. Then I got a report...

5W (from the PA) on 500kHz

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With the arrival of some IRF510 FETs I've built a small PA to go on the end of my WSPR beacon transverter. The output (from the PA) is n...

The first transistor - read Shockley's lab notes

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Take a look at William Shockley's hand written lab notes at Bell Labs when he created the first point contact transistor back in Decemb...
15 Oct 2009

500kHz WSPR - last time before improving the station

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This evening and overnight I am running my 500kHz WSPR beacon for the last time in its unmodified state before beginning to make improvement...
1 comment:
14 Oct 2009

A new station hears my 500kHz WSPR QRPp

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This evening I received reports from G0BPU in Ipswich on 500kHz WSPR, This is now the 5th station to have heard my 6uW ERP signal. I am sti...

500kHz WSPR restarted - please listen

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In the coming weeks I shall be improving my ERP, but to get a baseline I've just restarted my 500kHz WSPR beacon which is believed to ha...
13 Oct 2009

161kms voice powered QSO by AA1TJ

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Just got an email from Mike Rainey AA1TJ describing his TX powered only by his voice . He achieved a distance of 161kms with a germanium tra...
2 comments:

Free power QRPp transceiver or beacon?

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The idea of powering a low power receiver, or even a transceiver or QRPp beacon, from free, otherwise wasted, RF energy that is all around u...
1 comment:

GQRP Club SPRAT 140

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The latest copy of GQRP's quarterly magazine SPRAT arrived here today and it was nice to see my little Sixbox 6m AM transceiver feature...
12 Oct 2009

Rybakov Wideband Vertical Antenna

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For those looking for a simple vertical antenna that can cover a wide range of HF bands you might want to try the Rybakov antenna. This is w...