[MRCG] Clatternet Schedule for Sunday 8/3/2014 20:30 TONIGHT

[Jim Falls]

Picking up 5551.575 mark tone only. No decode yet. 

Cheers!
Jim K6FWT
CBLA #37

> On Aug 3, 2014, at 19:26, "Mark J. Blair" <nf6x at nf6x.net> wrote:
> 
> UPDATE! It was pointed out to me that the frequency I picked is just over the digital sub-band edge. So, we'll QSY 50 kHz lower this evening. We can discuss a better frequency later if that's not an optimum one for any reason.
> 
> Updated announcement:
> 
> Folks, Tim N6CC and I plan to try another Clatternet tonight at 8:30 PM.
> 
> This setup was chosen for best compatibility with the military gear likely to be used on Clatternet.
> 
> Mode:
> * RTTY, 5 bit Baudot code, 45.45 baud
> * 850 Hz shift
> * Mark low (this is opposite of normal ham band convention)
> 
> Actual transmitted frequencies:
> * Mark  3551.575 kHz (+/- QRM in 1 kHz steps)
> * Space 3552.425 kHz
> 
> Tune a PRC-47 or GRC-106 as follows:
> * Indicated freq 3550 kHz. USB, of course.
> * Mark tone  1575 Hz
> * Space tone 2425 Hz
> * Centered around 2000 Hz
> 
> For a modern SSB rig with a sound card modem, this setup might work better:
> * Indicated freq 3550.5 kHz USB
> * Mark tone  1075 Hz
> * Space tone 1925 Hz
> * Centered around 1500 Hz
> 
> A true FSK rig like a GRC-46, GRC-26, etc. would tune to 3551.575 kHz (LOL! Just zero-beat one of the SSB-based rigs on the net!).
> 
> I'll be using a Yaesu FT-450D tonight, with a SigaLink USB interface and running fldigi on my Mac. Getting my vintage RTTY gear running is on my long list of to-dos!
> 
> -- 
> Mark J. Blair, NF6X <nf6x at nf6x.net>
> http://www.nf6x.net/
>