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1. Re: [TenTec] 75 Ohm twin velocity factor ? (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Sat, 27 Jan 2007 03:36:45 -0700
characteristic impedance is 120 cosh^-1 b/a This is a quote from the help for DERIVE which is a product of TI. "ACOSH(z) is the inverse hyperbolic cosine of z. ACOSH(z) simplifies to 2*LN(SQRT(z - 1)
/archives//html/TenTec/2007-01/msg00835.html (11,214 bytes)

2. Re: [TenTec] 75 Ohm twin velocity factor ? (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Sat, 27 Jan 2007 10:47:35 -0700
This is not a simplification. This is exact. It works for all values of a/b. 120*ACOSH(b/a)=120*(2*LN(SQRT(b/a-1)+SQRT(b/a+1))-LN(2)) Here is a table using this formula. b/a, impedance 74.20994852,60
/archives//html/TenTec/2007-01/msg00852.html (12,265 bytes)

3. Re: [TenTec] 75 Ohm twin velocity factor ? (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Sat, 27 Jan 2007 11:19:22 -0700
The TI-83 has cosh^(-1) function built-in. I did not check but I assume all the TI graphing calculators have the inverse hyperbolic cosine cosh^(-1). Jim FitzSimons .... you can't get down to 75 Ohms
/archives//html/TenTec/2007-01/msg00855.html (11,388 bytes)

4. Re: [TenTec] Pegasus and digital modes (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Tue, 25 Apr 2006 06:03:43 -0700
Craig, I run all those digital modes on my Pegasus. I have the best results with N4PY software because it has a RTTY/PSK31 mode. I use a 1000 Hz offset. The N4PY software tells MixW software that it
/archives//html/TenTec/2006-04/msg00724.html (9,567 bytes)

5. Re: [TenTec] Pegasus questions (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Wed, 15 Mar 2006 05:38:01 -0700
I use N4PY software and I am very happy with it. I do keyboard CW and psk31 using mixw software with N4PY. I also use paddles for QSK CW with N4PY. I have writelog software and others, but I never tr
/archives//html/TenTec/2006-03/msg00718.html (8,327 bytes)

6. Re: [TenTec] Pegasus questions (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Wed, 15 Mar 2006 05:45:01 -0700
I have never had a problem with RF. I do have a metal sheet under my Pegasus and computer. Jim FitzSimons W7ANF Craig - N4PY - no contest. I'd guess it would, but each situation is different. Just sa
/archives//html/TenTec/2006-03/msg00719.html (8,479 bytes)

7. Re: [TenTec] Pegasus questions (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Wed, 15 Mar 2006 06:08:40 -0700
$69.99 for callsign is too much just to play. Jim FitzSimons I use N4PY software and I am very happy with it. I do keyboard CW and psk31 using mixw software with N4PY. I also use paddles for QSK CW w
/archives//html/TenTec/2006-03/msg00720.html (8,704 bytes)

8. Re: [TenTec] TenTec Digest, Vol 39, Issue 64 (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Thu, 16 Mar 2006 08:45:56 -0700
Terry, I have used this software before. It was called PegasusPlus. I have a 2003 beta copy. Since I have not been very active I did not update it to the latest version. HamStationExtreme does not sw
/archives//html/TenTec/2006-03/msg00774.html (8,375 bytes)

9. Re: [TenTec] Pegasus control software (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Fri, 17 Mar 2006 08:37:35 -0700
I have 466Mhz computer, so the HamStationExtreme stops some times when tuning fast. When SWLing I set the step large and scan fast to find signals. I could only set the step with the keyboard up and
/archives//html/TenTec/2006-03/msg00856.html (9,167 bytes)

10. Re: [TenTec] Patcomm (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Wed, 23 Feb 2005 10:30:19 -0700
I have a PC-500. Jim FitzSimons W7ANF Yes Patcomm, is no longer. I sent a email to them with some questions about the PC-500 at the end od December, and about 3 weeks later, got a reply saying that t
/archives//html/TenTec/2005-02/msg00660.html (9,165 bytes)

11. [TenTec] Ground (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Tue, 12 Aug 2003 15:48:20 -0700
Do you mean all grounds? Do you connect your grounds to the neighbor's house? What about the barn? Jim W7ANF those a
/archives//html/TenTec/2003-08/msg00244.html (8,388 bytes)

12. [TenTec] ground (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Tue, 12 Aug 2003 16:55:03 -0700
Twenty feet away is not ground for RF or EMP. Twenty feet is more than a quarter wave length on the 20 meter band. Jim W7ANF
/archives//html/TenTec/2003-08/msg00251.html (7,065 bytes)

13. [TenTec] ground (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Wed, 13 Aug 2003 06:19:09 -0700
Bob, I have 2.5 acres. What if I had 40 acres? The reference link, which you wrote, does not show unrelated structures tied to the same ground. The use of series protection in combination with shunt
/archives//html/TenTec/2003-08/msg00271.html (8,066 bytes)

14. Re: [TenTec] N4PY Orion Shack picture (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Sun, 1 Jun 2003 12:29:00 -0700
I can not find anything on qth.com. Jim W7ANF
/archives//html/TenTec/2003-06/msg00008.html (7,356 bytes)

15. Re: [TenTec] Jupiter/Orion on 60 Meters (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Wed, 4 Jun 2003 13:06:06 -0700
There is digital on 5.345MHz with a shift of 850Hz. So somebody is allowed to use digital in that band. Jim W7ANF most the sure you reservation, we the like radar. for hint of settles go So
/archives//html/TenTec/2003-06/msg00168.html (9,154 bytes)

16. Re: [TenTec] Pegasus flash update (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Fri, 27 Jun 2003 20:37:56 -0700
Does the flash update work with N4PY software? Jim W7ANF
/archives//html/TenTec/2003-06/msg00833.html (7,880 bytes)

17. Re: [TenTec] Re: CW on 60M (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Thu, 15 May 2003 09:48:29 -0700
Is there a link to the new information of the 60M allocation? When will it be open for us in the US? Will the N4PY software support a the 60M band? Jim W7ANF
/archives//html/TenTec/2003-05/msg00379.html (10,044 bytes)

18. [TenTec] Fw: [BEACONet] The new 60m band & BEACONet (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Thu, 15 May 2003 15:14:27 -0700
timestamp listening have used Professional when not at the this provide 5348 require that 50 W, centered on Questions. http://groups.yahoo.com/group/CATCHes/
/archives//html/TenTec/2003-05/msg00409.html (9,498 bytes)

19. [TenTec] 60M (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Thu, 15 May 2003 15:20:23 -0700
31. We believe that frequencies in the 5250-5400 kHz range may be useful for completing disaster communications links at times when the 3 and 7 MHz bands are not available due to ionospheric conditio
/archives//html/TenTec/2003-05/msg00412.html (10,491 bytes)

20. Re: [TenTec] Jupiter & PSK31 (score: 1)
Author: "Jim FitzSimons" <cherry@getnet.net>
Date: Sun, 6 Apr 2003 19:10:18 -0700
I have run my Pegasus on psk31 using VOX. You have to play with the VOX settings and sound card output. They depend on your soundcard output. I use N4PY software which has a seperate RTTY/PSK31 mode.
/archives//html/TenTec/2003-04/msg00183.html (7,915 bytes)

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