Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org)
Message-ID: <016b01c72e71$0f4b8c60$92140d54@traceydlqceh0p>
From: "Tracey Gardner" <tracey.gardner@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <010220071302.14191.459A57CE0001E9D60000376F22092246270B97010D0A020E06979D0E03@comcast.net>
Date: Tue, 2 Jan 2007 13:22:31 -0000
MIME-Version: 1.0
Subject: LF: OT - Eddystone 1650/6
Content-Type: text/plain;
	format=flowed;
	charset="iso-8859-1";
	reply-type=original
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Status: O

Hello Warren

The addition of a modified PA0LQ audio filter would probably do the trick.
A good number of us on the NDB list are using 8Hz or narrower versions of 
this filter with great success.

http://www.we0h.us/PA0RDT_Audio_Filter.html

Steve Ratzlaff has recently modified the 8 pole Vectronics CW audio filter 
kit, model VEC-821K (list price of $29.95) to give switchable bandwidths of 
6Hz, 7Hz and 14 Hz.

http://www.vectronics.com/

Details of that modification are available for anyone who is interested.

http://www.morsex.com/ sell the kit for $24.95


73s Tracey


>
>    I have a 1650/6 which Geoff mofided by the addition of an opto-encoder 
> for tuning as well as some other modifications. It works well but lacks a 
> narrow cw filter which would be necessary for LF work.
>
>