Re: FIRST QSO ON 500KHz USING ROS 30 April


Graham
 

Hi Steinar,

If you check at the moment G4WGT is sending a beacon using the EME mode centered on 503.6 K , in the test last night it was very hard to stop it printing ! , thanks for your reports in the past , 73 - Graham

--- In digitalradio@yahoogroups.com, Steinar Aanesland <saanes@...> wrote:


Pity it is a proprietary software . I can't use it in Norway.

73 de LA5VNA Steinar





On 01.05.2010 15:32, graham787 wrote:
FIRST QSO ON 500KHz USING ROS 30 April

First qso on 500 KHz using ros , G0NBD and G4WGT , initially using 500/16 and then eme , reducing tx power , the level that the eme mode started to fail was in technical terms `just silly' reducing the tx to 3 watts carrier power then via a 20 dB attenuator down to 30 mW to a 35 ft top loaded Ae that needs round 50/75 watts to produce 100 mW erp , ie approx 500 : 1 reduction …….. reception 30 miles away by a similar Ae , then produced 100 % copy , depending on local noise level …

Later in the evening , M0BMU called G0NBD at 500/8 , a range of 200 miles , then follower at 100% qso over some 30 mins ending round 0010 local time , one final tx at 500/16 was also 100% decode , even in deep QSO , to the point of no audio from the speaker, the mode remained in lock and kept printing , each station running 100 watts.

Outstanding mode Jose !

73 – G ..



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