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41. Re: [TenTec] Corsair II speaker source? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Mon, 28 Feb 2011 23:26:03 -0600
When searching, the mounting dimensions are the last thing found on the spec sheet if there. Speakers are traditionally described by the outside diameter, whether round, pincushion or oval. All I fou
/archives//html/TenTec/2011-03/msg00000.html (10,763 bytes)

42. Re: [TenTec] OT: USB to Serial interface (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 02 Mar 2011 23:19:58 -0600
Maybe there's a parameter in windoze setup that allows it to poll ports like there is one for polling drive to see if the replacable disk has changed. That makes it see a new floppy or CD even though
/archives//html/TenTec/2011-03/msg00023.html (10,893 bytes)

43. Re: [TenTec] filters (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Fri, 04 Mar 2011 10:42:35 -0600
There should be a 5 digit number on the filter and there has been a list posted to this forum. But there is a list with part numbers and model numbers at: http://www.tentecwiki.org/doku.php?id=filter
/archives//html/TenTec/2011-03/msg00042.html (7,380 bytes)

44. Re: [TenTec] Speaker cable connector (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 06 Mar 2011 10:41:51 -0600
1/4 and 1/8TH (3 mm) plugs and jacks work. And the common sources of cables include molded plugs and jacks for extensions. Mono or stereo, e.g. 2 or 3 wire. 73, Jerry, K0CQ Thanks& 73, Barry N1EU ___
/archives//html/TenTec/2011-03/msg00072.html (8,589 bytes)

45. Re: [TenTec] Speaker cable connector (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 06 Mar 2011 12:01:07 -0600
Head phone jacks and plugs can be had with metal shells or plastic shells. I prefer the metal, because they don't break as often. Why the concern about exposing the grounds? The outside of the phone
/archives//html/TenTec/2011-03/msg00077.html (9,171 bytes)

46. Re: [TenTec] Speaker cable connector (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 06 Mar 2011 12:45:15 -0600
Oh, you mean INSIDE the radio. Molex would work fine there. Not a chance of getting mixed up inside the radio. 73, Jerry, K0CQ On 3/6/2011 12:24 PM, Barry N1EU wrote: On Sun, Mar 6, 2011 at 6:01 PM,
/archives//html/TenTec/2011-03/msg00081.html (8,948 bytes)

47. Re: [TenTec] OMNI VI+ problem (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Fri, 11 Mar 2011 13:46:37 -0600
The crystals are phase locked by the control board. I'd expect it to remain the same from 28.0 to 28.5 since the crystal and reference remain unchanged over that range. Probably a slight tweak of the
/archives//html/TenTec/2011-03/msg00118.html (9,374 bytes)

48. Re: [TenTec] 255 Power Supply (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 12 Mar 2011 21:20:53 -0600
Check the paralleled transistor junctions with an ohmmeter. The should be a difference in directions and not zero ohms. The symptoms are that the junction in at least one of the transistors is melted
/archives//html/TenTec/2011-03/msg00132.html (9,339 bytes)

49. Re: [TenTec] 255 Power Supply (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 13 Mar 2011 10:08:49 -0600
The transistors are wired in parallel, but that 0 resistance from base to one of the connections is a shorted junction in one of them. There's no repair possible for the transistor, it must be replac
/archives//html/TenTec/2011-03/msg00135.html (9,691 bytes)

50. Re: [TenTec] 255 Power Supply (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 13 Mar 2011 14:54:35 -0600
Typically the SCR is not give enough heat sink to keep if from heating up, but its expected to see only a short burst as it blows the fuse. It should check open anode (postive) to cathode, but with a
/archives//html/TenTec/2011-03/msg00139.html (12,433 bytes)

51. Re: [TenTec] Remoting An Orion? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 17 Mar 2011 08:51:56 -0600
remoterig.com has a mostly hardware solution. Not cheap. I've not used it. It will remote some rigs with removable heads, but not all. It will remote CAT controlled rigs and supplies the audio path a
/archives//html/TenTec/2011-03/msg00157.html (8,428 bytes)

52. Re: [TenTec] WTB Argonaut 505 parts radio (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 19 Mar 2011 16:48:52 -0600
According to NTE at www.nte.com, their NTE102 replaces the 2N4106 and NET103 replaces 2N4105. TO-5 packaged germanium transistors. Mouser www.mouser.com has the NTE in stock. about $7 each. 73, Jerry
/archives//html/TenTec/2011-03/msg00180.html (7,743 bytes)

53. Re: [TenTec] Corsair II VFO level? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Mon, 21 Mar 2011 12:17:14 -0600
I turned a solid knob out of 2" diameter aluminum for my Corsair II that gives it a lot nicer feel. But its colder than the plastic knob. I didn't get a good knurl on my little lathe but got enough o
/archives//html/TenTec/2011-03/msg00217.html (9,583 bytes)

54. Re: [TenTec] Corsair II DDS VFO (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Mon, 21 Mar 2011 13:12:43 -0600
DDS frequency switching speed is limited by the control logic, probably would take a whole cycle at RF just because of the number of bits in the serial control word. There's no chirp, the danger is a
/archives//html/TenTec/2011-03/msg00221.html (10,043 bytes)

55. Re: [TenTec] Corsair II DDS VFO (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 22 Mar 2011 10:02:46 -0600
If the DDS setting was independent of the readout in the radio it wouldn't take into account differences between the crystals where some bands are offset from even MHz to cut down on receive birdies.
/archives//html/TenTec/2011-03/msg00233.html (9,918 bytes)

56. Re: [TenTec] TenTec 200 VFO (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 22 Mar 2011 17:30:57 -0600
Usually you adjust L near the LF end of the range and C at the high end, when tuning is by variable capacitor. They interact so you have to move back and forth several times. 73, Jerry, K0CQ I have t
/archives//html/TenTec/2011-03/msg00246.html (7,938 bytes)

57. Re: [TenTec] Omni C crystal holder source (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 23 Mar 2011 10:05:03 -0600
With the crystal out of the socket you can try using a pointed object like a scribe or ice pick to slip between the sides of the socket pin and the insulator to squeeze the sides of the contact back
/archives//html/TenTec/2011-03/msg00257.html (9,636 bytes)

58. Re: [TenTec] Omni C crystal holder source (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 23 Mar 2011 10:12:28 -0600
Or a crystal scanner but http://www.danssmallpartsandkits.net/ has them in stock. 73, Jerry, K0CQ You might be able to rob a crystal connection block from an old 2meter crystal transiever, if you can
/archives//html/TenTec/2011-03/msg00258.html (8,693 bytes)

59. Re: [TenTec] Filter socket pins (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 23 Mar 2011 17:10:22 -0600
1mm is very close to .040" the diameter of miniature tube pins. And of 18 gauge (AWG) copper wire. The difference is .00063" The difference between 20 gauge copper wire and 0.8 mm is about the same.
/archives//html/TenTec/2011-03/msg00262.html (7,728 bytes)

60. Re: [TenTec] Need 1208 Manual (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 24 Mar 2011 01:52:50 -0600
Usenet.nl claimed to have a manual, but it costs about 10 euro to find out. There was an extensive review in QST that will give some operating hints, like drive level and the IF frequency which is 14
/archives//html/TenTec/2011-03/msg00267.html (8,504 bytes)

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