[Boatanchors] T-282/GR MD-141A

[John Flood]

Hi Bob,

That was one of the concerns I have about firing up the beastie!  I can look at the output on a spectrum analyzer if I do take it.  I've been listening to that band for years and years.  Most AC stuff in the clear but these days most of the sat stuff, except for the Brazillian trucker pirates, is all digital noise.  The recent activites in "The Gulf" have had more traffic on the sats than I ever heard but alas nearly all digital noise.  Those Brazillains crack me up and have some sets of stones to get 2M ham gear some home brew doublers and then use the older US milsats as repeaters as they haul freight across the wilderness!

Thanks,
John 



----- Original Message ----
> From: rbethman <rbethman at comcast.net>
> To: Boatanchors Mail List <boatanchors at mailman.qth.net>
> Sent: Mon, March 15, 2010 2:17:43 PM
> Subject: Re: [Boatanchors] T-282/GR MD-141A
> 
> John,

I have no idea regarding the 220 AM activity.

I would 
> suggest caution with one of these.

The reason is that its intended use is 
> the Military aircraft Band.  
Depending on how clean the signal is, it 
> "may" be suitable for Amateur 
220 AM service.  However, i'd ensure that 
> there are NO spurious signals 
beyond that portion.

Otherwise, Uncle 
> Sam would be hunting for a signal in its realm.

There is more activity in 
> that Military Air Band than people know of.  
Except in rare instances, 
> it is NOT encrypted.

Most aircraft transmitters require low power outputs 
> due to the altitude 
advantage.

The Civil aircraft only put out 10 to 
> 20 watts, and reach at least 100 
miles while being at altitudes bellow 
> 10,000ft.

The Military aircraft usually operate above 40,000ft unless 
> they are 
making low altitude runs, or are ascending or 
> descending.

Just my $0.02 worth!  I've got a receiver covering this 
> frequency 
range.  I hear a lot of traffic, with a discone antenna only 
> about 16ft 
above ground.  I can easily hear them over 100 miles 
> away.

My discone is one of those that most likely was used on a forward 
> 
observer vehicle.

Bob - N0DGN

On 3/15/2010 1:04 PM, John Flood 
> wrote:
> Greetings,
>
> I have a chance to  pick up one 
> of these 220-400MC AM beasts with the matching PS/Modulator.  A few 
> questions for the group:
> Is anyone here using one?  (we have 2-3 
> guys on 220AM here near Boston)
> Did anyone try to use one and is willing 
> to share horror stories?
> Is there anyone near Boston who is crazier than 
> me that cant live without one and is interested in purchasing it as a fund 
> raiser for the local ham club?
>
> John Flood  KB1FQG
> 
> 978-979-2807

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