Ron,
Going to a bandwidth in excess of 10 KHz. really isn't useful. The FCC
limits the AM BC'ers to a 10 KHz channel and the CCIR limits are less in the SW
bands.
Barry
K3NDM
>From: Ron Castro <ronc@sonic.net>
>Date: Thu Mar 16 12:05:06 CST 2006
>To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
>Cc: Ten Tec List <tentec@contesting.com>
>Subject: Re: [TenTec] Orion Sub Receiver BW
>My understanding is that in AM, the BW shown is supposed to be the actual
>recovered audio bandwidth, not the total bandwidth. There is no reason why
>it should be restricted to any less than 12 kHz since the DSP IF is 14 kHz
>wide, and the roofing filter over it is 20 kHz.
>
>Ron
>N6AHA
>
>----- Original Message -----
>From: "joel hallas" <jrhallas@optonline.net>
>To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
>Sent: Thursday, March 16, 2006 9:59 AM
>Subject: Re: [TenTec] Orion Sub Receiver BW
>
>
>> Am I missing something here?
>>
>> If a DSB AM signal is tuned with the carrier centered in a 6 kHz BW,
>> I would expect to see just 3 kHz of audio BW. If you tune the carrier to
>> one edge, you will be able to get a wider audio BW.
>>
>> 73, Joel
>>
>> Sinisa Hristov wrote:
>>
>>>Rick Williams wrote:
>>>
>>>
>>>
>>>>When I tuned in a local AM station and looked at the audio on HamAlyzer
>>>>it
>>>>looked great EXCEPT for one thing. It was only 3000 Hz wide? The audio
>>>>signal plummeted after 3,000 Hz!
>>>>
>>>>
>>>
>>>
>>>I attempted to measure AM RX audio response with 2.056 a few times,
>>>and in all ocassions it was 3 kHz on both main and sub RX.
>>>RX filters were fully open and RX was fed from a signal generator
>>>having adjustable modulation frequnecy.
>>>
>>>Audio response was close to 6 kHz with 1.373b5.
>>>
>>>
>>>73,
>>>
>>>Sinisa YT1NT, VE3EA
>>>_______________________________________________
>>>TenTec mailing list
>>>TenTec@contesting.com
>>>http://lists.contesting.com/mailman/listinfo/tentec
>>>
>>>
>>>
>>
>> _______________________________________________
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>>
>>
>
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