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Total 98 documents matching your query.

61. Re: [TenTec] ten tecs have 100 watts out on carrier?? (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sun, 30 Sep 2007 14:31:01 -0700 (PDT)
Fundamentally, a carrier is a carrier. A CW carrier is modulated on/off, while an AM carrier is constant (for the duration of the transmission that is). However, the peak output power for a given tra
/archives//html/TenTec/2007-09/msg00474.html (11,180 bytes)

62. [TenTec] Argosy I Price? (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Fri, 24 Aug 2007 11:05:57 -0700 (PDT)
I'm contemplating selling my rough Argosy I, and I figure I need a reasonable price for it. Power supply, optional crystal filters, no calibration or audio filter boards. Dial cord slips, lots of dee
/archives//html/TenTec/2007-08/msg00355.html (7,556 bytes)

63. Re: [TenTec] Is there a beefier 2N5301? (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Tue, 6 Mar 2007 16:15:43 -0800 (PST)
What's wrong with a fan, or a couple of small ones? The cheap PC ones won't last long, but should do alot for continous duty heat dissapation. Responding to an earlier post: it's better to use too li
/archives//html/TenTec/2007-03/msg00132.html (9,589 bytes)

64. Re: [TenTec] Kits Discontinued. (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sun, 11 Mar 2007 17:57:23 -0700 (PDT)
I think it'll still be around; the biggest cost will be the surface finish of the PCB. Low cost RoHS boards do not have a long shelf life (the solder finish corrodes quickly); the better boards cost
/archives//html/TenTec/2007-03/msg00278.html (9,797 bytes)

65. Re: [TenTec] 75 Ohm twin velocity factor ? (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sat, 27 Jan 2007 09:27:41 -0800 (PST)
This keeps coming up from time to time... Early 80's IIRC in QST. 105 ohms, losses started getting appreciable above 10MHz. I think DeMaw (or one of the other "big names") did the article. Shawn KB1C
/archives//html/TenTec/2007-01/msg00847.html (10,740 bytes)

66. Re: [TenTec] Coaxial Ground (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Mon, 16 Oct 2006 16:44:12 -0700 (PDT)
I thought most coax was right around 30pF per foot, regardless of size--the characteristic impedance is sqrt(L/C), and inductance is a weak function of wire diameter. So I don't think it'd matter wha
/archives//html/TenTec/2006-10/msg00446.html (8,141 bytes)

67. Re: [TenTec] Coaxial Ground (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Mon, 16 Oct 2006 17:25:46 -0700 (PDT)
Ah, I was thinking 50 ohm only: my handbook as a spread of 26pF/foot up to 30.8pF/foot for 50 ohm-ish coax. Foam seems to have some effect, not what I'd call alot (sometimes it changes, sometimes not
/archives//html/TenTec/2006-10/msg00451.html (8,391 bytes)

68. Re: [TenTec] Century 22 Question (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Tue, 5 Sep 2006 19:11:24 -0700 (PDT)
What's wrong with tapping off the PTO? The TenTec PTO's I've seen seem to have a decent amount of drive, and the freq displays have a decent input impedance--meaning low loading. I suppose you could
/archives//html/TenTec/2006-09/msg00088.html (9,267 bytes)

69. Re: [TenTec] Century 22 Question (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Thu, 7 Sep 2006 16:57:32 -0700 (PDT)
Nope. I recall looking at it when I owned one, and being sad that it couldn't be converted to a superhet--so it stands out in my mind. The band is first down converted to 5-5.5MHz, and then the PTO o
/archives//html/TenTec/2006-09/msg00121.html (11,432 bytes)

70. [TenTec] Argosy I "Thump"? (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sat, 12 Aug 2006 14:20:44 -0700 (PDT)
I've been messing with my Argosy I off and on for about a year now. I did do the inductor mod on the AF board; but got alot of 60Hz noise, inspite of clipping the AC wires going into the radio. So ou
/archives//html/TenTec/2006-08/msg00437.html (8,042 bytes)

71. Re: [TenTec] Argosy I "Thump"? (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sun, 13 Aug 2006 06:05:11 -0700 (PDT)
I think I know what it was: when the band noise is high enough for it AGC normally (as in, S meter sits at say S3), the noise is very loud until the AGC reduces gain. Takes time for an audio derived
/archives//html/TenTec/2006-08/msg00443.html (8,244 bytes)

72. Re: [TenTec] Argosy I "Thump" (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Wed, 16 Aug 2006 18:57:46 -0700 (PDT)
That's what I was starting to think, it was to do with the speed at which the audio derived AGC could respond. Lately, as I play on 80m, I've been wondering what I could do, perhaps disable AGC and c
/archives//html/TenTec/2006-08/msg00497.html (9,218 bytes)

73. Re: [TenTec] Argosy I "Thump" (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Thu, 17 Aug 2006 16:14:41 -0700 (PDT)
Interesting, hadn't thought of that. Too bad the Argosy lacks an RF gain. One step at a time. Shawn Upton, KB1CKT __________________________________________________ Do You Yahoo!? Tired of spam? Yah
/archives//html/TenTec/2006-08/msg00519.html (8,925 bytes)

74. Re: [TenTec] Argosy I "Thump" (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Thu, 17 Aug 2006 16:32:02 -0700 (PDT)
Sorry, didn't realize it had been answered a couple of times. I also have been basing my mods on the posted link; the recieve seemed pretty good, although it may need some more work: Was qso'ing the
/archives//html/TenTec/2006-08/msg00520.html (8,869 bytes)

75. Re: [TenTec] Century 21 (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sun, 20 Aug 2006 17:00:34 -0700 (PDT)
They sold the kits a few years ago, I think they still do. Couple hours of work, not too bad. Here is a good page on how to do it: http://www.io.com/~n5fc/c21_pto.htm I think I mused about putting th
/archives//html/TenTec/2006-08/msg00613.html (11,332 bytes)

76. Re: [TenTec] Ham Radio (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Thu, 6 Jul 2006 17:20:01 -0700 (PDT)
That would be cool. Simple setup, PTO, quiet frequency readout (or at least an output jack for external freq meter), QSK, a "real" CW transciever for the CW person with maybe 50W or so. The C21 setup
/archives//html/TenTec/2006-07/msg00148.html (10,651 bytes)

77. Re: [TenTec] 6N2 observations (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sun, 9 Jul 2006 15:19:35 -0700 (PDT)
Besides, wouldn't a preamp be best anyhow on 2m and up, to help with NF and coax loss? It's another part, yes; but since no coax is lossless and that also impacts noise figure, a preamp might as well
/archives//html/TenTec/2006-07/msg00196.html (10,791 bytes)

78. [TenTec] Argosy Mod Question (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sun, 11 Jun 2006 18:03:48 -0700 (PDT)
I finally am getting around to modding my Argosy I with the mods listed on the unofficial pages. I couldn't find the diodes listed, but made some substitutions: 5082-2800: these were for the mixer di
/archives//html/TenTec/2006-06/msg00205.html (7,964 bytes)

79. [TenTec] Argosy I: Mixer Balance (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Sat, 17 Jun 2006 12:32:47 -0700 (PDT)
Ok, getting it back together now. Does seem better, but I have a low frequency hum still--maybe it's from the PS, as I cut the AC wires and shorted them out, so the wires no longer run across the rig
/archives//html/TenTec/2006-06/msg00322.html (8,051 bytes)

80. [TenTec] Re: Omni VI Plus freq. readout (score: 1)
Author: Shawn Upton <kb1ckt@yahoo.com>
Date: Thu, 3 Oct 2002 13:14:38 -0700 (PDT)
What's wrong with the Scout? Is it drifty, inaccurate, or does the CW thing bother you (you know, the fact that it measures the injection freq, not the carrier freq, of a CW signal--it winds up being
/archives//html/TenTec/2002-10/msg00046.html (8,050 bytes)

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