I myself could have been a bit more tactful as well.
However, direct conversion has so many adverse artifacts that it makes me
cringe to think of using it. The C21 is quite a lot better, IMHO than is a true
“direct conversion” design.
The new SDR direct conversion process is a different matter with different
issues, some good, some not good. But at least they don’t suffer from arbitrary
sideband, hum and adjacent frequency overload (unless you send the A to D into
overflow).
73
Gary
> On Dec 30, 2017, at 1:24 PM, Lee <lee@wa3fiy.com> wrote:
>
> Yes, both Century 21 and 22 hear both sidebands all the time.....just LIKE a
> simple direct conversion receiver. Granted, the conversion details of both
> radios differ from a simple direct conversion receiver.
>
> I may have started this discussion when I said "...It tunes just like a
> direct conversion receiver where you hear both sidebands as you tune thru the
> signal...." in response to the original question. Emphasis maybe should have
> been put on the words "TUNES JUST LIKE". Sorry, I should have been more
> clear I guess. :-)
>
> HNY everyone,
>
> 73,
>
> -Lee-
> WA3FIY
>
>
> ------ Original Message ------
> From: "w0ep" <w0ep@w0ep.us>
> To: tentec@contesting.com
> Sent: 12/30/2017 1:56:17 PM
> Subject: Re: [TenTec] C22
>
>>
>> I must be misunderstanding..
>>
>> My C21 hears both sidebands all the time.
>>
>>
>> On 12/29/2017 10:47 PM, Dukes HiFi wrote:
>>>
>>> Its advantage over direct conversion is freedom from hum and images (wrong
>>> sideband).
>>>
>>
>> _______________________________________________
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>> TenTec@contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>
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