FW: [GreenKeys] Problems on Proposed Autostart Frequenfy 10.133

[Roy Norris]

-----Original Message-----
From: Roy Norris [mailto:Rnorris@charter.net] 
Sent: Wednesday, May 05, 2004 1:52 PM
To: 'telegrapher@att.net'
Subject: RE: [GreenKeys] Problems on Proposed Autostart Frequenfy 10.133

Hi Larry,

I got that just fine.  Sorry about the blocked message. Some how I
inadvertently got your email address on my blocked list.  I get a lot of
spam here and use a spam blocker to catch most of it.  Sometimes I screw
up and mistakenly hit a key that causes a desired address to be blocked.
Very sorry about that.

Here is the approach I have used to determine frequency accurately:  I
set up my transceiver (Icom 756 Pro II) for RTTY reception using very
narrow filters.  I then tune to WWV on 10 Mhz and tune in its carrier
until it appears in the center of the mark channel of my TU (ST-8000).
I then note the frequency readout on the ICOM which is then 10.00017.  I
then tune to the desired frequency (10.1375) plus .17 and that should
put the mark signal squarely in the center of my TU's mark channel for a
mark frequency of 10.1375. This approach eliminates any inaccuracy in
the receiver's frequency calibration.

I have been monitoring 10.1375 for a day now and it is clear.  (Using my
method described above, my ICOM indicates 10.13767 and that is
equivalent to a 10.1375 mark frequency.)  

The only other frequency that I have found to be clear in that region is
10.1275 but it is very close to the strong military/commercial encrypted
RTTY station just above it which might cause some people problems with
desensitizing of their receivers unless they have excellent front end
selectivity like the modern SSB transceivers.  For this reason, I am
recommending that we use 10.1375 since it has a good 2 Khz of clear
channel.

Any reasonable receiver that can receive SSB should be able to handle a
2 KC wide clear channel.

Best regards -- Roy, K4EEG