[RTTY] So...2125 or 1275

[John Barber]

It's worth remembering that the mark/space frequencies are not critical.
It's only the shift that is important.
The centre frequency of filters in some radios can only be switched to
preset points, 1300, 1400, 1500Hz etc. In this case it is better to run RTTY
with non-standard tones to put the signal in the centre of the filters. E.G.
set the filter to 1400Hz centre frequency and use 1315/1485Hz for
mark/space. Most software can be set this way for both TX and RX.
John GW4SKA

-----Original Message-----
From: RTTY [mailto:rtty-bounces at contesting.com] On Behalf Of Jeff Stai
Sent: 26 October 2016 01:45
To: Thom <ki8w at ki8w.com>
Cc: REFL-RTTY <rtty at contesting.com>
Subject: Re: [RTTY] So...2125 or 1275

On Tue, Oct 25, 2016 at 5:30 PM, Thom <ki8w at ki8w.com> wrote:

> I kinda like the sound of 2125 and I keep the monitor at a low level 
> in the shack.
>

It is helpful to listen to the audio, for several reasons.

Pick the tone that you like and keep that low level. You want just enough
volume to be able to tune by pitch, etc.

73 jeff wk6i


--
Jeff Stai ~ wk6i.jeff at gmail.com
Twisted Oak Winery ~ http://www.twistedoak.com/ Facebook ~
http://www.facebook.com/twistedoak
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