I have heard and even seen a diagram to allow this to be done. Apparently
the basic fax mode is only half duplex. The circuit I saw was a basic
hybrid to separate the two wire telephone line into send/receive and to
sense when the local fax was sending to trigger the radio (VOX)
There was great
At 09:55 PM 7/28/2006, KV9U wrote:
A low cost scanner
could be used to scan the image and then convert to bmp file format.
Any suggestions on whether this is feasible?
Scanning the image sounds like a good idea. The image could be converted
from .bmp to .jp2 and sent using HamPal or DigTRX.
Are you able to put your hands on the info by chance?
Howard W6IDS
Richmond, IN
- Original Message -
From: RussellHltn [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Sunday, July 30, 2006 3:42 AM
Subject: RE: [digitalradio] Recommendations on FAX
I have heard and even seen
Apparently the basic fax mode is only half duplex. The circuit I saw was a
basic
hybrid to separate the two wire telephone line into send/receive and to
sense when the local fax was sending to trigger the radio (VOX)
There is a good discussion of facsimile theory at
Are you able to put your hands on the info by chance?
HAL has a system that allows fax over radio:
http://www.halcomm.com/docs/fax4100.pdf
73,
Mark N5RFX
Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org
Other areas of interest:
The MixW Reflector :
Yes, I was aware of the HAL modem, but each one is around $1500 so
unlikely to be purchased. It would mostly be used for HF. It uses Clover
II and Clover 2000 which has a pseudo full duplex characteristic and I
can see how this would be useful for a handshaking requirement. The
individual
I don't know if the info you seek is here but
Try this website for info:
http://www.hffax.de/
Brad N1NPK
[Non-text portions of this message have been removed]
Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org
Other areas of interest:
The MixW Reflector :
The individual wanting to do this, is primarily interested in running two
bands (e.g., 2 meters/440) with full duplex.
Well if it was absolutely necessary to use telephone fax machines, then at
the originating end you would need a device that supplies -48 volts to the
fax machine telephone
Great information. However, the ham that contacted me has asked me to
not give him any more information as he only wants to do it his way or
nothing apparently. You would think that you would have a ham who would
be greatly interested in digital comx, especially for HF since the
distances he
Hi Rick and the group
just a pennies worth
1) you might consider using fractal image compression schemes (currently
used in spy satelites to save time, power, and bandwidth. hunt up a copy
of *Fractals
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