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41. Re: [TenTec] 75 Ohm twin velocity factor ? (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Sat, 27 Jan 2007 09:21:25 -0000
Duane, I don't know - I've not yet purchased any. If I do I'll let you know! 73, Steve G3TXQ -- Original Message -- From: dw To: Discussion of Ten-Tec Equipment Sent: Saturday, January 27, 2007 9:16
/archives//html/TenTec/2007-01/msg00835.html (12,132 bytes)

42. Re: [TenTec] 75 Ohm twin velocity factor ? (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Sat, 27 Jan 2007 13:43:29 -0000
Jim, Unless I'm doing something wrong, this simplification fails as b tends to a. It produces an answer of 83 for a=b so I guess it's the same simplification as the ARRL's log formula. According to J
/archives//html/TenTec/2007-01/msg00838.html (11,230 bytes)

43. Re: [TenTec] 75 Ohm twin velocity factor ? (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Sat, 27 Jan 2007 20:17:34 -0000
Jim, Apologies - my mistake. I misread how the "brackets" were grouped :) 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)
/archives//html/TenTec/2007-01/msg00861.html (12,708 bytes)

44. Re: [TenTec] 75 Ohm twin velocity factor ? (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Sat, 27 Jan 2007 20:34:00 -0000
Jerry, How do I get that? ..... mental aberration and mis-interpretting the "brackets", that's how :) At the risk of extending this thread for far too long .... what would happen if you "parallel con
/archives//html/TenTec/2007-01/msg00863.html (11,736 bytes)

45. Re: [TenTec] Omni 6 (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Thu, 17 May 2007 20:42:58 +0100
Merv, I have the same problem with my Omni VI. I can often move the birdies out of band by slight movement of the PBT control. I asked Ten Tec's Service Dept about the problem and this was Don's repl
/archives//html/TenTec/2007-05/msg00242.html (9,024 bytes)

46. Re: [TenTec] When did Ten-tec switch to Schottky diode ring mixers? (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Sun, 20 May 2007 17:15:37 +0100
Kevin, I have a Corsair II purchased new from the UK distributor on 3rd October 1986. The serial number is 580 - 01861 The schematic shows a single component, D13, for the mixer diode quad; its part
/archives//html/TenTec/2007-05/msg00279.html (9,324 bytes)

47. Re: [TenTec] When did Ten-tec switch to Schottky diode ring mixers? (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Mon, 21 May 2007 12:17:07 +0100
Gerald, Not strictly true .... on my Corsair II the "attenuator" switch removes the pre-amp and "replaces" it with a 3dB pad :) Steve G3TXQ Don't know about the Omni V and VI, but the "attenuator" sw
/archives//html/TenTec/2007-05/msg00300.html (9,659 bytes)

48. Re: [TenTec] When did Ten-tec switch to Schottky diode ring mixers? (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Tue, 22 May 2007 11:20:39 +0100
Jerry, I'll repeat that on my Corsair II when the amp is disabled a 3dB Tee attenuator is switched in, so the mixer is never connected directly to the antenna. Looking at the schematic you could beli
/archives//html/TenTec/2007-05/msg00320.html (10,077 bytes)

49. Re: [TenTec] Corsair II - No S-Meter Reading? (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Wed, 6 Jun 2007 19:58:02 +0100
Gary, "METER SWITCH In receive mode, the meter will automatically read S units when the METER switch is in any position except IC" I'm pretty sure the reason is that for all the other functions one s
/archives//html/TenTec/2007-06/msg00077.html (9,523 bytes)

50. Re: [TenTec] intro VE8RT (score: 1)
Author: "Steve Hunt" <steve@karinya.net>
Date: Tue, 3 Jul 2007 19:18:36 +0100
Hi Ron, If you manage to get your hands on some Scout modules, and you're interested in building your own QRP gear, take a look at my web page: http://www.karinya.net/g3txq/cubii/ where you'll see my
/archives//html/TenTec/2007-07/msg00054.html (9,012 bytes)

51. Re: [TenTec] Purpose of 250 Hz 8 pole filters (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Mon, 22 Oct 2007 16:58:51 +0100
Many, many years ago I was involved in the design of a "survivable" military ComSat system that would provide a low bit-rate channel under heavy jamming conditions. We set ourselves the target that i
/archives//html/TenTec/2007-10/msg00431.html (8,849 bytes)

52. [TenTec] Omni VI XTAL OSC problem (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Sun, 06 Jan 2008 18:45:26 +0000
Hi folks, I have an Omni VI which just developed a severe "warble" on Tx and Rx, but only on 160m. I assumed the problem must be with the 160m crystal (or associated components) on the Xtal Osc - LO
/archives//html/TenTec/2008-01/msg00108.html (7,552 bytes)

53. Re: [TenTec] Omni VI XTAL OSC problem (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Mon, 07 Jan 2008 08:58:44 +0000
Thanks for the info. One further question: I would have expected that if I made a slight adjustment to the inductor, the frequency would not vary because the loop would keep it locked to the 20MHz re
/archives//html/TenTec/2008-01/msg00117.html (7,291 bytes)

54. Re: [TenTec] Omni VI XTAL OSC problem (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Mon, 07 Jan 2008 15:02:16 +0000
Did a bit more work on the Omni VI today, and I'm pretty happy with the results. The line carrying the RF output from the Xtal Osc board to the Logic board phase comparator also returns the DC contro
/archives//html/TenTec/2008-01/msg00120.html (9,039 bytes)

55. Re: [TenTec] STANDARDISATION OF S-METER READINGS (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Fri, 11 Jan 2008 11:54:44 +0000
Folks, Here are some figures measured on my Corsair II: 160m: S6 = -90dBm, S9 = -68dBm (89uV), S9+20 = -47dBm 80m: S6 = -90dBm, S9 = -70dBm (71uV), S9+20 = -49dBm 40m: S6 = -90dBm, S9 = -68dBm (89uV)
/archives//html/TenTec/2008-01/msg00211.html (9,070 bytes)

56. Re: [TenTec] Corsair II tuning rate (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Mon, 24 Mar 2008 18:32:44 +0000
I wonder if anyone has produced a DDS unit to replace the Corsair VFO ? Steve G3TXQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.c
/archives//html/TenTec/2008-03/msg00311.html (7,570 bytes)

57. Re: [TenTec] Ten Tec 238A settings? (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Fri, 11 Apr 2008 22:01:08 +0100
That doesn't sound like the Palstar tuner I have. Mine is the "classic" balanced L network using 2 roller inductors linked by a drive belt and with a choke balun on the TX side of the network. But...
/archives//html/TenTec/2008-04/msg00118.html (9,878 bytes)

58. Re: [TenTec] K3 information (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Tue, 27 May 2008 23:34:37 +0100
Ernie, I believe that's just for casual data mode operation for those who don't want to connect up their computer! Steve G3TXQ _______________________________________________ TenTec mailing list TenT
/archives//html/TenTec/2008-05/msg00517.html (7,435 bytes)

59. Re: [TenTec] Omni VI problems, continued (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Fri, 30 May 2008 09:20:43 +0100
Ken, I had to make similar measurements on my Omni VI when I had temperature-dependant XTAL OSC instability problems. I found that the best place to measure the control voltage is across R25; you can
/archives//html/TenTec/2008-05/msg00597.html (10,747 bytes)

60. Re: [TenTec] Bazooka antenna (score: 1)
Author: Steve Hunt <steve@karinya.net>
Date: Mon, 02 Jun 2008 09:16:19 +0100
Folks, At the risk of stirring up a hornets' nest ...... .... I continue to see claims that the Double Bazooka exhibits a wider VSWR bandwidth than the equivalent thickness half-wave dipole. But I th
/archives//html/TenTec/2008-06/msg00034.html (8,257 bytes)


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