[ARC5] A-10 Radios

Thu Jul 12 14:42:17 EDT 2018

The Air/Ground VHF spectrum in Europe IS VERY CROWDED.  USA has many counties larger in area than some European countries!  The practical range of aircraft VHF radios at higher flight altitudes can be over 200 miles (~ 320 km)!  The amount of aircraft being served by major airports London-Heathrow, Paris-Orly, Flughaven Frankfort is huge and many airports are definitely within radio range of many others!

US military air uses a lot of 225-400 MHz frequencies and maybe the same is true for military of other countries.  That is a band that is 175 MHz WIDE.  The VHF air band runs from 118 to around 138 MHz (in some countries).  Governments will spend taxpayer's money to equip the military aircraft as they see fit, but commercial air companies and private owners don't have such a luxury!

73 de Mac, K2GKK/5
(Since 30 Nov '53)
Oklahoma City, OK
USAF Retired 61-81
FAA Retired 94-10
________________________________
From: arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> on behalf of Francesco Ledda <frledda at att.net>
Sent: Thursday, July 12, 2018 11:48
To: Peter Gottlieb
Cc: To: ARC-5; Robert Eleazer
Subject: Re: [ARC5] A-10 Radios

They will not.  ILS and VOR are here to stay.

Sent from my iPad

On Jul 12, 2018, at 11:28, Peter Gottlieb <kb2vtl at gmail.com<mailto:kb2vtl at gmail.com>> wrote:

I sure hope they don’t obsolete VORs. I think it is unwise to fully rely on any single system (GPS) for navigation.

Peter

On Jul 12, 2018, at 11:24 AM, Robert Eleazer <releazer at earthlink.net<mailto:releazer at earthlink.net>> wrote:

Could be that they have other uses planned for the spectrum.  In the US 108 to 118 MHZ is reserved for VOR.  GPS is supposed to replace all of the VORs, and presumably at least some of those frequencies will become available for communications.

Wayne
----- Original Message -----
From: Francesco Ledda<mailto:frledda at att.net>
To: 'jeepp'<mailto:jeepp at comcast.net> ; 'Robert Eleazer'<mailto:releazer at earthlink.net> ; 'Bart Lee'<mailto:kv6lee at gmail.com> ; 'Jay Coward'<mailto:jcoward5452 at aol.com>
Cc: 'To: ARC-5'<mailto:arc5 at mailman.qth.net>
Sent: Thursday, July 12, 2018 10:46 AM
Subject: RE: [ARC5] A-10 Radios

I don’t understand the need for the 8.33 kHz spacing, since the spectrum is not very crowded. Why such need? Anybody knows?

Frank, K5URG

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20180712/d782e3d0/attachment.html>