Re: LF: RE: 500 kHz JT4A

[Gary - G4WGT <g4wgt@tiscali.co.uk>]

Rik, & Andy,

Thanks for your report & comments & Andy for answering Rik's query.

Well there has not been any response to my CQ call so I will change the text to beacon & continue to see if there is a report from further afield.

If you want to try for a weak decode I can reduce the power for a short period say 30 minutes, my power is 50 watt RF (200 mW ERP) at the moment so in view of your good report I could take it down to 10 watts RF.

Let me know.

73, Gary - G4WGT - IO83qo

2010/1/27 Andy Talbot <andy.g4jnt@googlemail.com>

-24dB S/N (2.5kHz )  is usually guaranteed

Andy
www.g4jnt.com

This email has been scanned for damaging side-effects by the health and safety police, is guaranteed to contain no substances hazardous to health, but may contribute to dissolving the nether and polar regions

2010/1/27 Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>

Gary,

 

solid copy here, SNR -5 to -7dB.

But the signal is clearly audible, CW would be armchair copy.

Any idea down to what SNR values JT4A produces a usable decoding ?

 

73, Rik  ON7YD - OR7T

---

Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Gary - G4WGT [g4wgt@tiscali.co.uk]
Verzonden: woensdag 27 januari 2010 20:33
Aan: Rsgb_Lf_Group
Onderwerp: LF: 500 kHz JT4A

LF,

Running JT4A this evening on 503.600 kHz, dial frequency 502.300 kHz USB.

73, Gary - G4WGT - IO83qo