[Milsurplus] Harvey Wells AR-5A Military Aircraft

[Jim Isbell]

No, one of the positions is labeled filter and I am told it was a narrow 
filter to allow better copy of the code on the range stations.  The 
range position I am told selected a wider bandwidth so you could hear 
audio.  But then, why the Tower position unless it selected a fixed 
frequency.

C Whitaker wrote:

> de WB2CPN    2004.10.22   Ol' AACS man.
>
> Towers did transmit on LF.  It was 230 KHz or
> something like that.  The switch on the receiver
> you're talking about selected the audio filter.
> "Range" passed 1040 HZ only.  "Broadcast" should
> block 1040,  "Tower" should remove the filter.
> Are you sure the switch isn't labeled "Filter",
> because it is a filter switch?  (Tower's with
> HF used 6440 KHz.)
>
> 73  Clete
>
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