[Hallicrafters] OT: Aircraft Band

[Gary Pewitt]

Aircraft equipment is -very- expensive to replace.  To change all of the 
ground stations and all of the aircraft radios over to FM would cost 
billions.  Next question?



At 09:27 AM 3/4/05 -0600, Bruce Wright wrote:

>Dear Fellow Halli List Members...
>
>Knowing this question is somewhat off-topic, any replies are appreciated 
>and can be sent to me via direct e-mail.
>
>The recent postings about 115 mHz and its use, brought to mind a question 
>that's a curiosity to me and one that I've not found the answer to.
>
>After being away from amateur radio for a number of years, I wanted to 
>participate in a local charity event as a communications volunteer and 
>this required the purchase of an HT. I was surprised to find among its 
>specs an AM detector enabling it to receive the VHF aircraft band.
>
>Why is AM used in this band (118 to 136 mHz plus/minus)? It seems to me 
>that, at the current stage of communications, SSB would be the mode of 
>choice. (Btw, I'm NOT an anti-AM advocate).
>
>Anyone have a plausible answer(s)?
>
>Thanks, in advance.
>
>73,
>Bruce
>WC5CW
>
>
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Gary Pewitt  N9ZSV  n9zsv at cei.net
1500 French Prairie Rd.
Booneville, Arkansas  72927
Sturgeon's Law "90% of everything is crap"


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