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21. Re: [TenTec] Corsair II & Omni V Filters (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Tue, 27 Nov 2007 10:43:07 -0800
Look at the link I posted to the ten tec wiki on filters and my comment about the stock numbers. You can use the stock numbers to determine the filter model. There will often be two numbers on the fi
/archives//html/TenTec/2007-11/msg00536.html (9,170 bytes)

22. Re: [TenTec] Corsair II PTO Problems (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Wed, 28 Nov 2007 12:45:41 -0800
The Paragon (I and II) used a "normal" 4 octave PLL synthesized LO (with all the usual problems of increased phased noise) to get GC coverage. The Omni V (and VI) on the other hand used a narrow rang
/archives//html/TenTec/2007-11/msg00568.html (11,652 bytes)

23. Re: [TenTec] Corsair II PTO Problems (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Thu, 29 Nov 2007 18:03:55 -0800
See my post on the difference between the two. IMHO (and I think most of the nets HO too) the Omni V Better phase noise. Better crystal filtering close to the fist mixer (the advantage of a low IF co
/archives//html/TenTec/2007-11/msg00614.html (11,357 bytes)

24. Re: [TenTec] OT: What doe FB mean (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Thu, 29 Nov 2007 18:06:29 -0800
FB OM! I think of FB, HI and OM as emoticons of the telegraph age. We really need one to match :-( IH IH perhaps? What would you use on the air for "sadly"? 73 OM N7WIM On Nov 29, 2007, at 7:20 AM, B
/archives//html/TenTec/2007-11/msg00615.html (9,820 bytes)

25. Re: [TenTec] Tuning Rigs (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Mon, 1 Oct 2007 12:42:15 -0700
It could even be a useful retrofit into existing rigs -- especially easy in rigs that run 50 ohm connections between separate boards. A minor problem I see of putting it in the receive line is there
/archives//html/TenTec/2007-10/msg00044.html (9,524 bytes)

26. [TenTec] Argosy 525 identification: three different receiver mixers and serial numbers (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Mon, 1 Oct 2007 12:50:45 -0700
The current list with contributions from: VE7BGP, WA3FIY, N4NT, NN8B and NS1W. Thanks too all. 525 00721 1496 (Argosy front panel) VE7BGP 525 00748 1496 (Argosy front panel) NS1W 525 00895 4 diode mi
/archives//html/TenTec/2007-10/msg00045.html (8,806 bytes)

27. Re: [TenTec] dual receive (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Tue, 2 Oct 2007 19:00:30 -0700
I own a couple of them. The front end is not dissimilar to an Argosy (RF amp then homemade diode ring) but it's biggest problem is it is lacking preselection. So its exposed to every signal from MW t
/archives//html/TenTec/2007-10/msg00095.html (9,351 bytes)

28. Re: [TenTec] dual receive (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Tue, 2 Oct 2007 19:12:08 -0700
I really would have though the Jupiter would be better -- it probably is in real life with better preselection/LPF. The intercepts for the RX320 are not very impressive. ARRL RX320 review: Minimum di
/archives//html/TenTec/2007-10/msg00097.html (10,179 bytes)

29. Re: [TenTec] dual receive (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Tue, 2 Oct 2007 23:21:32 -0700
I can't believe I misread the schematic and missed the first mixer. I looked over the circuit diagram (after messing with my Argosy and Omni 546C) and that left an impression that they must be using
/archives//html/TenTec/2007-10/msg00103.html (14,198 bytes)

30. Re: [TenTec] dual receive (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Wed, 3 Oct 2007 10:36:03 -0700
I've wondered about this in the past too. Using "hand-built" mixers seems to be a part of the TT design style and has been for years. I would have though production costs would have swamped the compo
/archives//html/TenTec/2007-10/msg00115.html (10,453 bytes)

31. [TenTec] Differences between the Corsairs and the Paragons (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Wed, 3 Oct 2007 17:18:07 -0700
I know the "big design idea" between the Corsairs and the Paragons: conversion to 9MHz IF in the former and VHF (45MHz?) in the latter. But what are the differences between the successive models? Wha
/archives//html/TenTec/2007-10/msg00131.html (8,548 bytes)

32. Re: [TenTec] dual receive (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Wed, 3 Oct 2007 17:32:33 -0700
Yes, it's all in the loop design. The Elecraft K2 is rather smart about this in moving in big steps and them tweaking the PLL reference (using a DDS) to move the PLL between the big steps. The RX320
/archives//html/TenTec/2007-10/msg00133.html (10,839 bytes)

33. Re: [TenTec] paragon or paragon II - what would you choose? (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Wed, 3 Oct 2007 22:28:31 -0700
Could you elaborate on that, Bob? Is the Paragon II phase noise much lower than the Paragon? The ARRL only reviewed the Paragon (not the P II) and it was the first review for which they measured phas
/archives//html/TenTec/2007-10/msg00153.html (8,717 bytes)

34. Re: [TenTec] External Speaker for OMNI VI+ Best Choice? (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Wed, 10 Oct 2007 10:44:37 -0700
And the patrioic paragraphs ... Sounds Sweet speakers are assembled and finished in the U.S.A. Sounds Sweet speaker cabinets are manufactured in the U.S.A. out of U.S. produced fiberboard, sealants,
/archives//html/TenTec/2007-10/msg00220.html (9,091 bytes)

35. Re: [TenTec] do any ten tec radios excel on longwave AM Broadcast band? (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Wed, 10 Oct 2007 11:11:46 -0700
Depending on the definition of excel. The RX320 with the BCB filter disabled, the T3 input transfomer replaced (the RX320 LF mod) and perhaps a LF/MF preselector and attenuator added is perhaps the "
/archives//html/TenTec/2007-10/msg00222.html (9,828 bytes)

36. Re: [TenTec] bringing up an old amp (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Sat, 13 Oct 2007 12:25:22 -0700
Personally I prefer the style of HV warning sign on an X-ray system I once saw in a lab. The power supply could provide something in the region of 10kV at 0.5A. The warning on the outside said: "Cont
/archives//html/TenTec/2007-10/msg00288.html (10,194 bytes)

37. Re: [TenTec] 6N2 (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Sat, 20 Oct 2007 14:54:01 -0700
Can I be nosey and ask how much it went for? Not too many of these appear for sale. (yes, this is on the list as I though others and the archive might be curious too). 73 Kevin Hello All, The 6N2 I h
/archives//html/TenTec/2007-10/msg00400.html (7,527 bytes)

38. Re: [TenTec] WTB: Argonaut II (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Sun, 21 Oct 2007 16:26:08 -0700
IIRC The ARRL reviewed a Argonaut II and a Delta II and found big difference between the receiver numbers (they're supposed to be identical). So there seemed to be large unit to unit variations. And
/archives//html/TenTec/2007-10/msg00417.html (8,685 bytes)

39. Re: [TenTec] Purpose of 250 Hz 8 pole filters (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Mon, 22 Oct 2007 18:28:24 -0700
People interested in this might find this paper interesting: The WeakSignal Capability of the Human Ear by Ray Soifer, W2RS <http://www.g1ogy.com/www.n1bug.net/tech/w2rs/humanear.html> <http://www.g1
/archives//html/TenTec/2007-10/msg00445.html (15,573 bytes)

40. Re: [TenTec] K4VUD & Titan 425 (score: 1)
Author: Kevin Purcell <kevinpurcell@pobox.com>
Date: Fri, 26 Oct 2007 15:09:31 -0700
Posting a link or at least a list name and perhaps subject name might make it easier for others to follow this. So the list is DX-CHAT. And the (a) message is here: <http://www.mail-archive.com/dx-ch
/archives//html/TenTec/2007-10/msg00487.html (12,200 bytes)

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