Re: LF: ROS beacon 503.600kHz

[Horst Stöcker <horst.stoecker@web.de>]

Hello,

I have no receiver for SSB on 500kHz. But I could see (and hear) a trace at 505,18 kHz several times today at about 15 UTC.

I installed the program and heard the signal from my soundcard in different modes. I do not think, there ist a mode that makes a signal with just one frequency. But don't beat me: As I do not konow much about ROS I am not sure about that.

Maybe it was your signal. So have a look.

JO30OT, RX:selective level meter Präcitronic MV-62, T-Antenna 10h/20t with L for 500kHz.

vy73 Horst DO1KHS

---

Von: Gary - G4WGT <g4wgt@tiscali.co.uk>
Gesendet: 30.04.2010 13:15:10
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: ROS beacon 503.600kHz

Hi Graham, Rik, LF,

Thanks to all for the reports & feedback.

Graham, the correct text string is :-

TEST G4WGT IO83QO

So the 22:20 & 22:25 frames were the correct full text. The 22:30 frame appears to have decoded the space as a full stop (period) symbol.

But very good results considering the method.

Rik, it seems that the majority of the version updates are to implement users suggestions, so being a new mode there have been lots of ideas from operators of ROS.

73

Gary - G4WGT

On 30 April 2010 10:51, Graham <g8fzk@g8fzk.fsnet.co.uk> wrote:

Gary,

 

 

Using the  Dutch  web-sdr  about  400  miles  , ROS decoded this  ......  2230  looks like the  full text string ? no  audio  from the  speaker or as far as I could  see  no trace on the  waterfall  .......

 

G ..

 

RX1: <21:15 UTC> <6.8 Hz> /*$F9G4WW 4E424+O9000J \W39Z)CIR+B,$ <CANCEL> <-30 dB>
RX1: <21:50 UTC> <6.8 Hz> TEST G4WGTEG3]Y]O  <STOP> <-31 dB>
RX1: <21:55 UTC> <6.8 Hz> TESG4WGT IO83QO  <STOP> <-29 dB>
RX1: <22:00 UTC> <6.8 Hz> TEST G4WGTOIO83QO  <STOP> <-31 dB>
RX1: <22:05 UTC> <6.8 Hz> $ESTQE]WGT+IO83QO  <STOP> <-31 dB>
RX1: <22:10 UTC> <6.8 Hz> ]EST G4WGT IO83QO  <STOP> <-32 dB>
RX1: <22:15 UTC> <7.3 Hz> :EST G4WGT IO83QO  <STOP> <-31 dB>

RX1: <22:20 UTC> <6.8 Hz> TEST G4WGT IO83QO  <STOP> <-28 dB>
RX1: <22:25 UTC> <6.8 Hz> TEST G4WGT IO83QO  <STOP> <-29 dB>
RX1: <22:30 UTC> <6.8 Hz> TEST G4WGT.IO83QO  <STOP> <-29 dB>
RX1: <22:35 UTC> <6.8 Hz> TESTEW4WGT IO83QO  <STOP> <-30 dB>

 

 

 

 

From: Gary - G4WGT

Sent: Thursday, April 29, 2010 9:42 PM

To: LF Group (RSGB)

Subject: Re: LF: ROS beacon 503.600kHz

LF,

Not able to reply to any calls from now but the beacon will continue until about 2300utc.

I will resume tests tomorrow (Friday) night & increase power for greater distance.

73

Gary - G4WGT

On 29 April 2010 20:18, Gary - G4WGT <g4wgt@tiscali.co.uk> wrote:

Hi LF,

I am increasing the PTT loop timer to provide a 5 minute increment of the beacon.

This will give operators lots of time to create a reply or call. My beacon will stop & notify me if a reply or call is made.

73

Gary - G4WGT.

On 29 April 2010 19:27, Gary - G4WGT <g4wgt@tiscali.co.uk> wrote:

Hi LF,

I am transmitting ROS v3.4.8 data software in EME mode using the PTT loop timer set for 1 minute.

Dial is 502.050 kHz USB

Frequency is 503.600 kHz

Tx power is 1 watt

ERP estimated at 4mW

Software & user guide is downloadable at :- http://rosmodem.wordpress.com/

Reports, comments & QSO attempts most welcome.

73

Gary - G4WGT.

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