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Re: [TenTec] On the Corsair II revival idea and receiver noise

To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Subject: Re: [TenTec] On the Corsair II revival idea and receiver noise
From: "rick@dj0ip.de" <Rick@DJ0IP.de>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 24 Nov 2016 12:25:46 +0100
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Even if it equaled the K3 performance, it would be outstanding.
But the problem is and remains Xtal Filters.
We'll need 6, maybe 8 of them and we'll be lucky if they are priced under
$100 each.

73 - Rick, DJ0IP
(Nr. Frankfurt, Germany)



-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Barry N1EU
Sent: Thursday, November 24, 2016 11:31 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] On the Corsair II revival idea and receiver noise

If the Corsair III ended up equaling or exceeding the K3S in performance
with the body of an Omni VI+, I'd buy one.

73 & Happy Turkey Day,
Barry N1EU

On Thu, Nov 24, 2016 at 4:13 AM, GARY HUBER <GLHuber@msn.com> wrote:

> Before I bought my Corsair-II and was looking at the Paragon and 
> Corsair-II, I was asked by one of the TenTec staff manning their booth 
> at Dayton, "What radio are you using now and what is your principal 
> use, DXing, nets, rag chewing or something else?" When I responded 
> that I was using a model 546-C and matching external VFO to chase DX 
> from a quiet rural location, his response was, "you'll be a lot 
> happier with a Corsair-II... you'll be able to hear weak stations with 
> it that will be covered in noise in the Paragon!" I bought the 
> Corsair-II and sold my OMNI-D to my best friend who had just become a 
> General licensee and was looking for a radio.
>
> I still have that Corsair-II which was built in the last production 
> run of model 561s. I did A-B tests with it and the Paragon (model 585) 
> I bought several years later for MARS work for Operation Desert Shield 
> and Operation Storm. In those tests which were done using a DOW Key 
> Relay reversed so that only one radio was connected to an antenna or 
> with a coaxial jumper between the two radios with one switch set for 
> AUX ANT and the other to AUX RX and with the radio with the switch set 
> to AUX RX having a good antenna connected to its SO-239, the 
> Corsair-II was always slightly better. Its those signals below S-2 and 
> into the RX/band noise where the Corsair-II comes out ahead.
>
> I also had a fully loaded OMNI-VI+ (model 564) and found it, through 
> testing in the manner above, to be at least equal to the Corsair-II, 
> mostly due to 1.8 kHz and 500 Hz filters in BOTH I.F.s, making it more 
> selective and a bit quieter. The CAT serial port on the 564 is a huge 
> advantage for those doing computer logging while DXing or Contesting.
> The lack of frequency / mode information from an un-modified 
> Corsair-II like the one I own is its major drawback, in my opinion.
>
> I currently have an OMNI-VII (model 588) with a FLEX-1500 as its 
> sub-RX (N4PY mod) as my primary radio and with the Corsair-II as the 
> back radio. (see AB9M at QRZ.com for the station photo) While the 
> OMNI-VII is a great radio for my needs, in my opinion (and experience) 
> it needs to some careful adjustment of the RF gain to avoid digital 
> artifacts which are created from strong signals in the passband when 
> trying to work 2 kHz to 10 kHz from the DX station with lots of callers.
>
> Regarding the cost of any Corsair-II replacement; I know there is the 
> issue of price, but I believe its also a matter of value for an 
> experience which cannot be matched by others. If you provide a pure 
> analog receiver and transmitter chain like the model 561 with only DDS 
> VFO and CAT serial ports then perhaps your market segment is in a 
> different range than the IC-7300. Today absent any product from TenTec 
> to replace my OMNI-VII and FLEX-1500, I'll keep my Corsair-II and buy 
> a FLEX-3000. The Eagle may need a replacement, but one for the 
> OMNI-VII and ORION is long overdue.
>
> --
> 73 ES DX,
> Gary - AB9M
>
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