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Re: LF: GMSK on 476.100

To: [email protected]
Subject: Re: LF: GMSK on 476.100
From: g3zjo <[email protected]>
Date: Fri, 15 Mar 2013 22:15:25 +0000
In-reply-to: <955B910E408F4C2D9F95CBF60B4BD723@GaryAsus>
References: <[email protected]> <[email protected]> <C162616BDECC40B7A44DD1DA3AD249A9@GaryAsus> <[email protected]> <955B910E408F4C2D9F95CBF60B4BD723@GaryAsus>
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There is a signal in Speclab producing a small  bump on the FFT display, the AFC grabs it nicely but the signal is marginal. A very important section of the message decoded well, G6AVK's Locator.

Eddie
 
On 15/03/2013 21:55, Gary - G4WGT wrote:
OK Eddie,
 
Yes, you are correct. I have connected input to the "mic" socket & I now have waterfall OK.
Fortunately the external sound card has a level control for "mic" (&  speakers) so is easy to adjust.
 
Thanks.
 
73, Gary - G4WGT.
----- Original Message -----
From: g3zjo
Sent: Friday, March 15, 2013 8:56 PM
Subject: Re: LF: GMSK on 476.100

Hi Gary

I haven't tried any waterfall adjustments, the display is a bit dark on mine and on the Grabs from G6AVK signal traces of what is visible on Speclab do produce a line though. The program may need a bit more audio in than most.
I like to use the FFT display a signal shows up as bump which can be clicked on to set the frequency and then the AFC takes over.

73 Eddie
 
On 15/03/2013 20:30, Gary - G4WGT wrote:
Hi Eddie,
 
Trying to run GMSK here but cannot see anything on the waterfall on Rx, when I go to Tx I see my mode trace in strong colours. The waterfall is black & not showing the usual noise or signal traces. I have set to the external sound card I normally use with the TS-440 on LF & MF. All OK with other software.
 
Any clues please.
 
73, Gary - G4WGT.
 
 
----- Original Message -----
From: g3zjo
Sent: Friday, March 15, 2013 7:22 PM
Subject: Re: LF: GMSK on 476.100

Ooops Sorry

476.100KHz

On 15/03/2013 17:35, g3zjo wrote:
Running GMSK on 467.100 Beacon 15.625 Hz Wide

Dial 474.200KHz cursor 1900Hz

Software MMVari by JE3HHT. The install comes up with a language warning (it can use Varicode Extended Japanese character set) this can be ignored.

Sound Card sample  rate 48KHz..

Reports welcome

73 Eddie G3ZJO





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