Search String: Display: Description: Sort:

Results:

References: [ +from:geraldj@isunet.net: 357 ]

Total 357 documents matching your query.

81. Re: [TenTec] Corsair II f.p. meter continued + other fixes (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Wed, 02 Jul 2003 12:03:12 -0500
I think that relay you hear is the amplifier keying relay. Some object to it's sound and stuff a bit of paper match stick under the armature to stop it from clicking. 73, Jerry, K0CQ -- Entire conten
/archives//html/TenTec/2003-07/msg00070.html (9,713 bytes)

82. Re: [TenTec] Corsair II tricks and tips (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Wed, 02 Jul 2003 13:08:21 -0500
The small shaft WAS a part of the rebuild kit I bought. And my PTO demanded it. It was badly worn. I need to add another end play washer. The shaft grounding not only adds a little rotational stiffne
/archives//html/TenTec/2003-07/msg00077.html (8,952 bytes)

83. Re: [TenTec] DeoxIT (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Wed, 02 Jul 2003 13:58:04 -0500
DeoxIT is THE best contact cleaner, bar none. But it needs to be used sparingly, in quarter drop amounts per contact. It can soften insulating materials like wafer switches and PC boards if sprayed i
/archives//html/TenTec/2003-07/msg00080.html (7,815 bytes)

84. Re: [TenTec] field day from hell, almost ! (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Mon, 07 Jul 2003 13:23:48 -0500
Our club class 3F station had it really tough. No Tentecs. Carpet on the floor, central air conditioning, stairs to the roof, a bit limited roof space for antennas and no way to toss up a tower witho
/archives//html/TenTec/2003-07/msg00231.html (8,248 bytes)

85. Re: [TenTec] Corsair ON/OFF (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Wed, 09 Jul 2003 22:08:28 -0500
The two switches are probably in series. Whatever the power switch is in the power supply its easier to replace than the switch in the Corsair. Use the power supply switch and leave the Corsair switc
/archives//html/TenTec/2003-07/msg00293.html (8,758 bytes)

86. Re: [TenTec] field day from hell (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Wed, 09 Jul 2003 22:08:31 -0500
Bob, don't knock the computer logging all that much. Its only half as fast as logging on paper, maybe slower if the logger can't copy CW at contest speeds and the operator has to make a paper log for
/archives//html/TenTec/2003-07/msg00294.html (9,599 bytes)

87. Re: [TenTec] Corsair ON/OFF (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Thu, 10 Jul 2003 09:08:32 -0500
Its probably a better option to switch the power supply from an external easily replaced switch such as on an outlet strip. That cuts down on power supply and radio repair. 73, Jerry, K0CQ -- Entire
/archives//html/TenTec/2003-07/msg00302.html (8,627 bytes)

88. Re: [TenTec] Corsair ON/OFF (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Thu, 10 Jul 2003 16:32:12 -0500
No. The radio switch is only a remote power supply line switch. No DC is switched with the standard Tentec cable (though it is with my cable). One presumes that the output of the Tentec supply won't
/archives//html/TenTec/2003-07/msg00313.html (9,109 bytes)

89. Re: [TenTec] field day from hell (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Fri, 11 Jul 2003 08:16:31 -0500
At that point, why not have the computer copy, then the operator can take a long siesta and wander back to see how the contest went. Where's the OPERATOR SKILL in that? Like a local no code Extra who
/archives//html/TenTec/2003-07/msg00331.html (10,077 bytes)

90. Re: [TenTec] COAX AND FERRITE BALUNS (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Fri, 11 Jul 2003 19:04:04 -0500
Solenoid coil baluns are effective so long as you avoid their stray resonances, such as where the outside is a halfwave long (including the outer covering which may be considerably lossier than the p
/archives//html/TenTec/2003-07/msg00362.html (9,095 bytes)

91. Re: [TenTec] 40823 Mosfet for Omni-C (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Fri, 11 Jul 2003 19:04:10 -0500
The 40823, 40822, 40821, 3N140, 3N142, and 40673 are virtually indistinguishable from their data sheets. The 4082x were pushed more as industrial transistors while the 3N14x and 40673 were pushed mor
/archives//html/TenTec/2003-07/msg00363.html (10,206 bytes)

92. Re: [TenTec] Orion with color display (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Mon, 14 Jul 2003 12:43:35 -0500
I see that one can buy an Orion with 13 or 19" color display at Walmart. ;<) Under $100, and it receives, probably has no transmitter PTT connection. Receives from 54 to 800 MHz with some gaps, in 6
/archives//html/TenTec/2003-07/msg00413.html (8,856 bytes)

93. Re: [TenTec] balanced feedline light bulb test (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Tue, 15 Jul 2003 12:32:28 -0500
LEETLE light bulbs. Flashlight or panel lamps. Then use the two wires with alligator clips on each lamp to TAP on the feed line, using a length of feedline as a current shunt to give the gossamer lam
/archives//html/TenTec/2003-07/msg00427.html (9,348 bytes)

94. Re: [TenTec] balanced feedline light bulb test (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Tue, 15 Jul 2003 17:32:37 -0500
Who here has a matched PAIR of RF voltmeters good for transmit power? Not many compared to the number that could come up with small lamps. As far as I recall, the inductively coupled indicators don't
/archives//html/TenTec/2003-07/msg00447.html (9,668 bytes)

95. Re: [TenTec] balanced feedline light bulb test (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Tue, 15 Jul 2003 18:48:02 -0500
Even spark wanted more antenna current by what ever means possible, hence the high capacity flat top antenna to raise the feed line current, whether it improved DX or not. 73, Jerry, K0CQ -- Entire c
/archives//html/TenTec/2003-07/msg00451.html (8,782 bytes)

96. Re: [TenTec] balanced feedline light bulb test (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Tue, 15 Jul 2003 21:38:21 -0500
The diode capacitor and DC VOM simple RF voltmeter has fairly low impedance that can lead to forced unbalance that if the balancing circuit hasn't even impedance on both sides, the RF meter won't giv
/archives//html/TenTec/2003-07/msg00468.html (9,633 bytes)

97. Re: [TenTec] Corsair II f.p. meter continued + other fixes (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Wed, 16 Jul 2003 17:14:10 -0500
Not according to my schematic. The relay is in the transmitter lead, there are only diodes and the separate receiver switch in the receiver side. 73, Jerry, K0CQ -- Entire content copyright Dr. Geral
/archives//html/TenTec/2003-07/msg00492.html (10,084 bytes)

98. Re: [TenTec] Future TT projects (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Mon, 02 Jun 2003 10:52:21 -0500
IBM still sells hardware and software to the PC market, just they don't RUN the market. 73, Jerry, K0CQ -- Entire content copyright Dr. Gerald N. Johnson, electrical engineer. Reproduction by permiss
/archives//html/TenTec/2003-06/msg00045.html (8,251 bytes)

99. Re: [TenTec] Some Observations on Orion Stability/Calibration (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Mon, 02 Jun 2003 10:52:53 -0500
HF propagation is enough of a variable that getting to 1 Ppm precision can take averaging measurements from WWV over several days. Part of the few Hz you see can easily be coming from propagation cha
/archives//html/TenTec/2003-06/msg00046.html (9,192 bytes)

100. Re: [TenTec] Some Observations on Orion Stability/Calibration (score: 1)
Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
Date: Mon, 02 Jun 2003 14:05:28 -0500
TC stands for Temperature Compensated, NOT Temperature Controlled. So the oscillator controls should be responding to its environment. But HF propagation causes short term variations in frequency of
/archives//html/TenTec/2003-06/msg00057.html (9,850 bytes)

Current List: 81 - 100
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18]
This search system is powered by Namazu