Permit to use aircraft radio frequencies on ground

Gord Beaman wrote:
David Lesher wrote:

Yup! Gord is correct... that is what the industry is saying.
However, I believe the FCC is still with the old nomenclature
vis-a-vis Mobile Phone vs Cell.

Jer/ Eberhard


{posted at Jer's request; he has ...an oil leak on his
server, yea, that's it..}




Of course...and the term is no longer 'cellular' anyway it seems,
they now seem to prefer 'Mobile phones' so I guess it's a moot
point, but ISTM that the aircraft cel system is a helluva lot
closer to the terrestrial cel system than anything else.

No. "Mobile phones" is an entirely separate service, running
in the 152 Mhz and 450 Mhz bands... this is what we had BEFORE
cell phones. :-)

I was a "Mobile phone" dispatcher when I was at university...
1970 - 1974. :-)

Best regards,

Jer/ "Flight instruction and mountain flying are my vocation!" Eberhard


Yes, you're quite correct in what you say about the old 'Mobile
phones'.

I was the chief (only) tech for a small communications company
where we installed 'Key telephone systems' and Mobile Car
Phones', BUT I was just pointing out that the cellular phone
companies 'now' call them 'mobile phones' (again?).

I have a brand new handout sheet here for the kind of cel phone
that I'm interested in exchanging for my present one...remember
that I said NEW handout...it calls them 'mobile phones'...I'll
scan it and email it to you if you cannot take my word for it...
--

-Gord.
(use gordon in email)


Best regards,

Jer/ "Flight instruction and mountain flying are my vocation!" Eberhard

--
Jer/ (Slash) Eberhard, Mountain Flying Aviation, LTD, Ft Collins, CO
CELL 970 231-6325 EMAIL jer'at'frii.com WEB http://users.frii.com/jer/
C-206 N9513G, CFII Airplane&Glider, FAA-DEN Aviation Safety Counselor
CAP-CO Mission&Aircraft CheckPilot, BM218 HAM N0FZD, 221 Young Eagles!

On Sun, 09 Jan 2005 19:01:30 GMT, Gord Beaman
wrote:

Of course...and the term is no longer 'cellular' anyway it seems,
they now seem to prefer 'Mobile phones' so I guess it's a moot
point, but ISTM that the aircraft cel system is a helluva lot
closer to the terrestrial cel system than anything else.

The term "cellular" has a specific meaning within the FCC rules.
There is a section of the rules (I forget which one) that regulates
the "cellular service", and another section of the rules that
regulates PCS phones (the "personal communications service"). The
former is not allowed to be used in the air whereas the latter is.

A few years ago there was a company that was experimenting with ways
to use the "cellular service" from the air without bringing up too
many cells, etc. They were working with a special waiver from the
FCC. I don't know what all ever became of their work.

CJ

Cell towers do not work individually, each tower only has a few
channels of the huge amout of frequencies available. Your cell phone
simply picks the strongest available frequency. That is usually the
nearest cell tower, but if all available channels are in use that may
be the next nearest tower. There are not just cells but also regions
of cell towers, each region will use all of the available channels and
have a limited number of land lines available to it. The problem
occures when the cell phone access several regions with several towers
of the same frequency. Aircell phones have a lower power and a shaped
antenna giving a norrow beam down to the ground.

I understand that AirCell phones use the same system as regular cell
phones. There is a special antenna on the aircraft which gives a lower
power shaped transmission which cannot broadcast past the existing cell
region. Each region is made up of a network of cell phones. They may
have some dedicated frequencies or channels but they use the same
network of cell towers and regions.