[Laser] NEW RECORD XE

[John Matz]

Very good.  Congratulations.  It is good to hear some substantial work is
occurring in Mexico.  70 km is a long path for light.  If you have been
reading this reflector, you have read of the long paths being bridged in
Australia too.  They are using more power though, maybe 5 or 10 times higher
optical power.  I do not remember exactly.  Chris, refresh my memory.
John Matz KB9II

----- Original Message -----
From: "Alvaro de Leon Romo" <xe2at at hotmail.com>
To: <laser at mailman.qth.net>
Sent: Saturday, March 19, 2005 8:02 AM
Subject: [Laser] NEW RECORD XE


Dear friends glad to give some info about my new record on Laser, the old
was 44.5 km and today we can complete 2 way QSO on CW with XE2ZB at
70.325km...
The conditions were good , cold and clear and in 10 min both transmitters
were aligned, now we are expert :-)
On both side 3mw lasers and 4 inches magnifiers on the receiver with Ramsey
modified with OPT101, we canot hear diference in level between 44.5 km and
70 km.
On my side I build a G0MRF receiver , first one , with a OPT101 and the
volume was great but may be because the TL071 the noise was high and I can
hear almost the same between both receivers..
David many thanks for your help.
I know that the OPT301 is better that 101 so if someone have 2 for sale pse
send me an email...
Now all is ready to work the 5th grid, I hope soon we can do the next test..
And thinking to use a 10mw laser :-)
Thanks and have a great day
Al
XE2AT

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T1msn. Más Útil Cada Día  http://www.t1msn.com.mx/

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