[TenTec] Corsair II knobs ?

Patrick flymooney at gmail.com
Tue Jun 12 14:24:56 EDT 2018


I'll second what Barry said. I had a DDS in a Corsair II and ended up 
pulling it all back out after a few weeks. It wasn't really 
"objectionable" but it was definitely noticeable and thus, objectionable 
to me. YMMV

Patrick
K4PNR


On 6/12/2018 4:47 AM, Carlos wrote:
> Hi Barry,
> 
> You are absolutely right. I have been using the Corsair to monitor
> local traffic in 40 meter, where signals are so strong that any
> off-frequency parasitic response due to the spurious tones generated
> in the DDS seem to be negligible.
> 
> What I'll do next weekend is to make proper screen captures of the
> spectral distribution of the 5 MHz PTO Vs. the 5 MHz DDS. The stuff I
> have at home does not have much dynamic range (probably 75 dB at
> best), but I'm sure that the differences are easy to notice.
> 
> 73,
> Carlos VK1EA
> 
> 
> 
> On 6/11/18, Barry N1EU <barry.n1eu at gmail.com> wrote:
>> FWIW, the PTO has a MUCH cleaner spectrum - noticeably lower transmit and
>> receive spurs.
>>
>> You can easily see this if you put the PTO vs. DDS Corsair in transmit mode
>> and look at the signal on an SDR.
>>
>> Barry N1EU



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