RTTY
[Top] [All Lists]

[RTTY] What is the sideband convention

To: <rtty@contesting.com>
Subject: [RTTY] What is the sideband convention
From: w9hly@decaturnet.com (w9hly@decaturnet.com)
Date: Fri, 21 Dec 2001 18:21:47 -0500
Many thanks for the words of wisdom. I am digesting it before I say 
another word about the subject.

Vern

On 20 Dec 2001, at 16:50, Bill Henry & others wrote:

> Hi Vern,
> 
> The rule is LSMFT - "Low Space Means Fine Teletype".  This slogan used
> to be printed on the editorial page of the RTTY Journal.  The rule
> comes from using relays and later diodes to switch an extra capacitor
> across the VFO tank circuit in the 1950's.  The normal "rest"
> condition - RTTY Mark - is with the extra capacitor out of the
> circuit. This corresponds to keeping the same VFO dial calibration as



<Prev in Thread] Current Thread [Next in Thread>