Showing posts with label 50mw. Show all posts
Showing posts with label 50mw. Show all posts

5 Nov 2014

10 USA reports running 50mW on 10m WSPR

I think 10m has closed for me to the USA for the day.   I'll leave 10m WSPR running a little longer just in case.  At 2010z, 10 reports had been received, all at 50mW and all from stations in the USA. This was an interesting experiment as I know my antenna is not the best. 500mW seems almost like high power now!

The FT817 was set at 500mW and a good quality rotary attenuator (set to 10dB insertion loss) added as close as possible to the rig, therefore producing 50mW into the antenna lead and antenna. Because the cable will have some loss at 28MHz (1dB?) the actual radiated power will have been a little under 50mW.

UPDATE 2100z:  The 10m band has definitely closed here to the USA. Only G4IKZ (local) spotting me now. at 50mW.
10m WSPR spots running 50mW today

26 Feb 2013

40m WSPR with 50mW - best DX spot 6505km

Reports received with 50mW on 40m
Overnight I've been WSPRing with 50mW output on 40m using the Par 10/20/40 end-fed antenna down the garden.  The FT817 set to 500mW directly feeds a Telonic 10dB rotary attenuator set to 10dB attenuation, so no chance of radiation from a coax cable. The antenna is only about 15m long and just 5m average height above the ground. Results (see above) have been very pleasing with best DX report from the USA - K9AN at 6505km.