Total posts : 45366
Maybe, the original question really is:
What kind of electronic approach do you
use to achieve syncing of multiple transmitters?
How do you hook up the GPS and what info
from the GPS is used? What does the circuitry
look like? What is the theory behind it all?
Somewhere around Newport R.I. there were
a bunch of TIS transmitters that were synced
up, They were somewhere in the 1610 to
1700 range. Here’s the funny part. The transmitters
appeared to be on the exact same frequency, but
the voice messages were not synced. So we drove
through an area in the car where two voices were
trying to talk on top of one another. There was no
hetrodyne at all, that I can remember.
Maybe they weren’t synced but were very close together
in frequency just by luck.
Anyway, for whatever it’s worth, I have no idea
how to use a GPS to sync a bunch of transmitters.
I guess the Hamilton Rangemaster has the circuitry
to allow for that.
I do remember using WWV to align the 100 kHz crystal calibrator
on my Heathkit HR-10B “communications” receiver.
I put the word communications in quotes because the
HR-10B was not a very good receiver. It had all kinds
of problems, as any ham who owned one would know.
Still, I loved the receiver anyway, and I do have one
in my current collection.
Bruce, Dog Radio Studio 2