[ARC5] A-10 Radios...NO IT'S NOT!!!

[Mike Morrow]

Hundreds of megawatts!?!?  That's an awful lot of hyperbole about a hyperbolic radionavigation system!

AFAIK, four megawatts was the greatest LORAN C transmitter power, with most sites much lower.  So, at best it was 0.04 "hundreds of megawatts".  Does that count?

Mike / KK5F

-----Original Message-----
>From: Peter Gottlieb <kb2vtl at gmail.com>
>Sent: Jul 13, 2018 10:23 PM
>To: arc5 at mailman.qth.net
>Subject: Re: [ARC5] A-10 Radios
>
>Hundreds of megawatts?
>
>
>On 7/13/2018 5:07 PM, Brooke Clarke wrote:
>> Hi:
>>
>> The problem is that all these sat nav systems work in what used to be called 
>> L-band (1 - 2 GHz) and it's pretty easy to make a receiver deaf by noise 
>> jamming with low power. and an antenna that's a few inches in size.  The mil 
>> receivers know they are being jammed and roughly the bearing where it's coming 
>> from, but they still are jammed.
>>
>> LORAN-C, operating at 100 kHz and with the eLORAN updates would be close to 
>> GPS in capability and is virtually jam proof.  The transmitters are running 
>> hundreds of megawatts into a 1000+ foot antenna.  Hard to generate a signal at 
>> the receiver that can compete with that received power.