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41. Re: [TenTec] Omni VI+ Keying (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sat, 13 Aug 2005 06:06:33 -0700
No, Bob, I hooked the Key Pulser to the "KEY" input of the Omni 6+ not the keyer paddle input. Otherwise I would still be getting a string of CW characters when I set the pulser to 100% instead of a
/archives//html/TenTec/2005-08/msg00248.html (10,841 bytes)

42. Re: [TenTec] Omni VI+ Keying (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sat, 13 Aug 2005 19:29:28 -0700
Interestingly enough, Ken, I just tried using the Omni 6+ with its internal key. With the keyer adjusted for about 30 WPM, a string of dits gives what appears to be an ~33% duty cycle, but I would ha
/archives//html/TenTec/2005-08/msg00274.html (11,183 bytes)

43. Re: [TenTec] Omni VI+ Keying (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sun, 14 Aug 2005 20:28:13 -0700
If found some derivations on the internet that suggest that WPM = 2.4 X the dit frequency. The specs on INRAD website say 50ms pulse rep rate = 48 WPM, which would be consistent with that number (1/5
/archives//html/TenTec/2005-08/msg00295.html (11,612 bytes)

44. Re: [TenTec] cw settings (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sat, 19 Nov 2005 14:46:45 -0800
The FT-1000MP MK5 with the key click mod is a good example of this. Unless you pre-bias the ALC circuit, it still clicks on leading characters and inter-word leading characters. Looks (and sounds) re
/archives//html/TenTec/2005-11/msg00349.html (10,854 bytes)

45. [TenTec] Fw: Inrad 763 vs 765 (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Mon, 2 Jan 2006 12:02:12 -0800
Hi All, I just ordered an INRAD roofing filter kit for my Omni 6+. Initially I specified the INRAD 765 (centered on 500 Hz offset), but now I am wondering if I wouldn't be better off with the 763 (75
/archives//html/TenTec/2006-01/msg00064.html (7,158 bytes)

46. Re: [TenTec] Fw: Inrad 763 vs 765 (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Tue, 3 Jan 2006 10:11:04 -0800
Thanks for the detailed reply, Roger. I have Ten-Tec's #219 and #282 in my N2 positions, so I should probably change my order with George from the #765 to the #763 since the center frequency of the #
/archives//html/TenTec/2006-01/msg00107.html (8,593 bytes)

47. Re: [TenTec] What makes the 238 good or any other tuner good? (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Fri, 20 Jan 2006 03:33:46 -0800
Yes and no, Gary. Using good coax certainly helps, but as the feedpoint impedance gets very high (like what you get when operating a 1/2 wave dipole on an even harmonic) then losses skyrocket even wi
/archives//html/TenTec/2006-01/msg00711.html (11,383 bytes)

48. Re: [TenTec] What makes the 238 good or any other tuner good? (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Fri, 20 Jan 2006 23:53:52 -0800
I am curious, what are you basing that on, Bob? My computer modeling suggests otherwise, but I am using the NEC-2 engine, so I don't know how valid my data is. The ARRL antenna book mentions that inp
/archives//html/TenTec/2006-01/msg00770.html (11,631 bytes)

49. Re: [TenTec] What makes the 238 good or any other tuner good? (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sat, 21 Jan 2006 00:05:33 -0800
Actually if you have a very-low impedance load, a low impedance line is better. Open wire line made from say #14 copper has more loop conductor resistance per unit length than a piece of Andrew LDF4-
/archives//html/TenTec/2006-01/msg00771.html (11,478 bytes)

50. Re: [TenTec] Omni-VI+ Phase Nosie and INRAD roofing filter mod? (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Thu, 1 Jun 2006 22:20:33 -0700
Jerry, I'd be careful about how I was doing the testing. I've noticed that when testing rigs right next to each other with a common physical connection that there are all sorts of common-mode sneak p
/archives//html/TenTec/2006-06/msg00018.html (10,257 bytes)

51. Re: [TenTec] Orion with Drake L7 (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Fri, 16 Jun 2006 21:10:22 -0700
Neil, My L-7 relay input jack shows an open circuit voltage of 27.7 VDC and a short circuit current of 3.2 milliamps. I've had no problems keying it directly with my Omni 6+. Dunno about the specs on
/archives//html/TenTec/2006-06/msg00309.html (7,784 bytes)

52. Re: [TenTec] Paragon Problem -spurs on either side of carrier (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sun, 28 Jan 2007 11:46:18 -0800
Joel, What was the input voltage to the Paragon? I think it maybe sensitive to input voltage. Before I retired it, I ran mine off of a 13.8V supply and never had any complaints about my TX purity, no
/archives//html/TenTec/2007-01/msg00898.html (9,600 bytes)

53. Re: [TenTec] Paragon Problem -spurs on either side of carrier (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sun, 28 Jan 2007 18:48:27 -0800
Hi Joel, You'll notice from the pictures on the link I posted that the spur content was a function of frequency as you might expect from a multi-loop synthesizer. You might want to check several diff
/archives//html/TenTec/2007-01/msg00913.html (13,135 bytes)

54. Re: [TenTec] running cw with generator question (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sun, 4 Mar 2007 10:01:28 -0800
Hi Jerome, I run my Omni 6+ and Drake L-7 amplifier with a pair a EU-2000i's (using the parallel kit) when operating 160 meters from the desert. Line regulation from these generators is excellent. Th
/archives//html/TenTec/2007-03/msg00040.html (11,258 bytes)

55. Re: [TenTec] function of tuners (score: 1)
Author: Michael Tope <W4EF@dellroy.com>
Date: Sat, 22 Mar 2008 23:15:05 -0700
LOL. I guess the impedance matching is only a side-effect of the "ass kicking" :-) :-) Mike, W4EF........................ _______________________________________________ TenTec mailing list TenTec@co
/archives//html/TenTec/2008-03/msg00282.html (8,992 bytes)

56. Re: [TenTec] SWR VS Power Loss (score: 1)
Author: Michael Tope <W4EF@dellroy.com>
Date: Fri, 04 Jul 2008 11:01:34 -0700
Steve, This table just shows the percentage of incident power reflected and transmitted at a mis-matched RF transmission interface. You'll notice that the "% of Loss" versus transmitted power (what t
/archives//html/TenTec/2008-07/msg00060.html (10,149 bytes)

57. Re: [TenTec] SWR VS Power Loss (score: 1)
Author: Michael Tope <W4EF@dellroy.com>
Date: Fri, 04 Jul 2008 15:37:31 -0700
Hey Jerry, VSWR = (1 + |RHOv|)/(1-|RHOv|) For VSWR = 6:1, |RHOv| = 0.71 (i.e. 1.71:/0.29) Return Loss = 20*log(|RHOv|) = 20*log(0.71) = -3dB I think you forgot to square the voltage reflection coeffi
/archives//html/TenTec/2008-07/msg00067.html (9,612 bytes)

58. Re: [TenTec] 422 HF Amp Input Low Pass Filter Board question (score: 1)
Author: Michael Tope <W4EF@dellroy.com>
Date: Wed, 25 Feb 2009 11:04:53 -0800
Hi Jim, The Centurion is a pair of 3-500Z running in zero-bias mode (something like 2500Vdc on the plates), so the power gain is much lower than the Titan amps with the 3CX800s. Driving the Centurion
/archives//html/TenTec/2009-02/msg00373.html (9,197 bytes)

59. [TenTec] OMNI 6+ Random Beeping on SSB (score: 1)
Author: Michael Tope <W4EF@dellroy.com>
Date: Wed, 31 Mar 2010 11:54:33 -0700
When I operate SSB with my OMNI 6+ I get random beeping in audio output during my voice transmissions which comes and goes. I find it very distracting and would like to get rid of it. Has anyone else
/archives//html/TenTec/2010-03/msg00417.html (6,671 bytes)

60. Re: [TenTec] Best Ten-Tec bang for the buck? (score: 1)
Author: Michael Tope <W4EF@dellroy.com>
Date: Wed, 31 Mar 2010 22:54:15 -0700
I nominate my 12 gauge pump that I am going to use to shoot my POS Omni 6+ next time it starts randomly beeping on SSB :-) 73, Mike W4EF _______________________________________________ TenTec mailing
/archives//html/TenTec/2010-03/msg00448.html (9,443 bytes)


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