[Laser] NEW RECORD XE

[Berns Buenaobra]

It seems theres a lot of news about distance achievement here but I
don't see much about documentation?

Berns B.
bbuenaobra at nip.upd.edu.ph


On Sat, 19 Mar 2005 22:03:51 -0600, John Matz <Jematz at megsinet.net> wrote:
> 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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-- 
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Bernardino Jerez Buenaobra
University Research Associate
National Institute of Physics
University of the Philippines
Diliman Campus 1101 Quezon City
Philippines
Telephone: +6324344232
Fax/Data:  +6329280296
URL:  www.nip.upd.edu.ph/ipl
email: bbuenaobra at nip.upd.edu.ph
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