Message-ID: <41E91721.6060908@usa.net>
Date: Sat, 15 Jan 2005 14:14:09 +0100
From: Alberto di Bene <dibene@usa.net>
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To: rsgb_lf_group@blacksheep.org
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Z-USANET-MsgId: XID703JaoNoB0400X28
Subject: LF: Re: Jason V0.99 with I/Q outputs
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Hello Staf,

  I concur completely with what Wolf has said. Both Yaesu and Kenwood 
(and I suspect Icom too) have the
rig switched to USB when using CW. Just the filter width and its 
position relative to the theoretical carrier
do change. So adding a CW choice to the mode would mean just to 
duplicate the USB settings, with perhaps
just a change of center frequency (in Jason). But this can be easily 
done manually.

73  Alberto  I2PHD
----------------------------------------

Wolf DL4YHF wrote:

> Hello Staf,
>
> From a technical point of view, there is only USB and LSB in a 
> receiver, "CW" is one of these with additional filtering (and a 
> frequency offset added, the "pitch", usually something like 650...800 
> Hz). To use your receiver in "CW" mode, you need to find out if that 
> is in fact "USB" or "LSB", and add (or subtract) the CW "pitch" to the 
> display frequency offset. Some rigs have a "CW reverse" mode. What it 
> is, depends on the manufacturer. My old kenwood uses USB for CW and 
> LSB for  "CW reverse".