[Hallicrafters] Bandwidth on AM

[Rodger]

Hi Bob,

If your SX-101A is aligned properly then the bandwidth in the 5 Kcs 
position is pretty wide.  Since the 101A is set up to receive one AM 
sideband at a time, the response is similar to a conventional AM 
receiver with a 10 Kcs bandwidth at the 6 db down points and hopefully 
there are not many stations in the ham bands taking up a full 10 
Kcs-typically you will find AM roundtables at 3880, 85, and 90 without 
excessive QRM between the groups.  I am a dedicated vintage and AM 
operator (many rigs including Desk KW, Viking 500, Valiant, Globe 
Champion, Gates BC-250GY etc.) but I don't use an audio chain with 
excessive high frequency response.  Of all the rigs, only the Gates 
would likely be able to produce wide audio and it is currently 
undergoing additional restoration and is fed via  Orban equalizer and 
modulation limiter units to maintain a proper "amateur" bandwidth.  If 
you want wider bandwidth on the 101A you are looking at either tacking 
some capacitors across the low IF transformers or playing with the 
values of the switched units.

73, Rodger WQ9E

AA6RK at aol.com wrote:
> Good afternoon!
> I would  like to widen the bandwidth on my SX-101A Am. Any articles on this 
> topic or  practical experience? Bob...  
>
>
>
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