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

[Ray Poularas]

Unfortunately nothing heard here in Sydney Australia despite good clear
conditions, I may need some additional work on my antenna system..its not
great on 80M.

Regards
Ray
www.tuberadio.com

> I heard you guys, very strong signals but I have no means to decode.
>
>
>
> Tom, W6TOM
>
> -----Original Message-----
> From: MRCG [mailto:mrcg-bounces at mailman.qth.net] On Behalf Of Mark J.
> Blair
> Sent: Sunday, August 03, 2014 7:27 PM
> To: West Coast Military Radio Collectors Group
> Cc: Jim Falls
> Subject: Re: [MRCG] Clatternet Schedule for Sunday 8/3/2014 20:30 TONIGHT
>
> 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/
>
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