Funny you should mention that Ed.

One of my long term projects is a "where is the family car" system that
I had hoped to use a very narrow band/slow data link for GPS data as
well as short text message exchange. Thinking along the lines of super
slow QRSS/PSK31 setup on 13.56MHz. The narrow bandwidth and low power
would I hope cover much of the country but I'll admit I haven't done the
maths on it.

I have seen a PSK63 system that does HF mail type exchanges. Kind of
slow but very do-able. Just a HF rig and laptop/PC at both locations and
you can stay in touch! When the sigs are real good of course you can use
plain old SSB!

Cheers Bob W5/VK2YQA



Ed Cregger wrote:
I just ordered a digital squawk box made by AOR. I'm interested in
staying in contact with my wife's mobile when she is "on the road"
hawking the business' wares at quilt fests and the like.

Bob Bob wrote:
Funny you should mention that Ed.

One of my long term projects is a "where is the family car" system that
I had hoped to use a very narrow band/slow data link for GPS data as
well as short text message exchange. Thinking along the lines of super
slow QRSS/PSK31 setup on 13.56MHz. The narrow bandwidth and low power
would I hope cover much of the country but I'll admit I haven't done the
maths on it.

I have seen a PSK63 system that does HF mail type exchanges. Kind of
slow but very do-able. Just a HF rig and laptop/PC at both locations and
you can stay in touch! When the sigs are real good of course you can use
plain old SSB!

Cheers Bob W5/VK2YQA


A person should be able to come up with a multiple PSK31 signal method
of sending hfemail. Maybe even PSK63. I wouldn't want to send much
faster than that for BW/SNR reasons.