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Total 172 documents matching your query.

101. Re: [TenTec] Radio Science + QSK = Radar (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Tue, 03 Jan 2006 17:54:50 -0600
The Soviets were not the only ones using OTHR that utilized HF (some in ham bands). GE did testing that encroached on the ham bands (at times). I am saying that as I saw documentation that indicated
/archives//html/TenTec/2006-01/msg00126.html (10,184 bytes)

102. Re: [TenTec] Radio Science + QSK = Radar (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Thu, 05 Jan 2006 06:56:16 -0600
Some FAA Technicians were trained on the "FPS" series of long range radars which the FAA maintained at the time (at some "joint use" sites and FPS's acquired at a few FAA Only sites) at Keesler AFB.
/archives//html/TenTec/2006-01/msg00214.html (11,655 bytes)

103. Re: [TenTec] openwire feed OT (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Tue, 31 Jan 2006 12:55:16 -0600
snip FWIW The impedance of free space (and a vacuumn) is approximately 377 Ohms. It too is referred to as Zo and is a physical quantity. A horn antenna in radar or microwave serves as a match from th
/archives//html/TenTec/2006-02/msg00038.html (7,630 bytes)

104. Re: [TenTec] S-meter and RF Gain (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Thu, 09 Feb 2006 21:23:59 -0600
snip snip Varying the rf gain shouldn't vary the strength of the signal received. I recall an alignment procedure for the s meter where a 50 microvolt signal applied to the receivers input would prod
/archives//html/TenTec/2006-02/msg00346.html (9,253 bytes)

105. Re: [TenTec] Orion II and other $$$ deliveries (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Fri, 10 Feb 2006 22:20:08 -0600
Its pretty simple here at this QTH. UPS delivers to a pallet mill that is on the opposite side of the highway any packages that are addressed to me. Fed Ex puts packages in a waterproof bag and hangs
/archives//html/TenTec/2006-02/msg00395.html (11,293 bytes)

106. Re: [TenTec] Hi Fi SSB (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Fri, 17 Feb 2006 06:29:38 -0600
Listening to "HI-FI SSB" sounds good, provided the content is good, such as fine music that benefits from the additional frequency spectrum . But I agree with you that the additional bandwidth used i
/archives//html/TenTec/2006-02/msg00798.html (8,396 bytes)

107. Re: [TenTec] Hi Fi SSB (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Fri, 17 Feb 2006 07:11:40 -0600
Why bother, if no one is listening? If a tree falls in the forest, will it make a sound if no one is there to hear it? Jim wd4air _______________________________________________ TenTec mailing list
/archives//html/TenTec/2006-02/msg00799.html (8,510 bytes)

108. Re: [TenTec] Hi Fi SSB (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Fri, 17 Feb 2006 14:14:07 -0600
snip snip I am not sure it is "a natural tendency for those in the Ham Radio 'hobby' to putting out a stronger signal." Maybe there is a desire to have a clean signal that is what the T is in RST. Mo
/archives//html/TenTec/2006-02/msg00801.html (8,888 bytes)

109. Re: [TenTec] Triton IV Digital (544) Problem (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Mon, 20 Feb 2006 14:25:07 -0600
I used to own a TT Model 544, bought it new in the late sixties. Kept until last year. The digital display does cause birdies at some points. Solution: avoided those spots. It will be interesting to
/archives//html/TenTec/2006-02/msg00967.html (9,223 bytes)

110. Re: [TenTec] eBay auction (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Mon, 20 Mar 2006 06:31:41 -0600
I believe it was an error on the part of the sender. It was meant for his son and he mistakenly sent it to the list. Why would he mention that he took some literay liberties in the description which
/archives//html/TenTec/2006-03/msg00964.html (8,562 bytes)

111. Re: [TenTec] Orion Question (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Thu, 30 Mar 2006 11:27:39 -0600
If you decide to go with the relay, remember to compensate for the inductive kick when relay coil circuit is opened. Use a diode across the relay coil with the cathode side towards the +12 source. Ji
/archives//html/TenTec/2006-03/msg01327.html (11,026 bytes)

112. Re: [TenTec] The ORION II sure makes me happy (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Sat, 01 Apr 2006 07:10:57 -0600
snip TT may be playing to a tough audience, but this reflector does not by any means reflect only the "tough audience" Although I would agree the DX Contesters etc. may be contributing to most of th
/archives//html/TenTec/2006-04/msg00024.html (10,145 bytes)

113. Re: [TenTec] Happy Orion owners (was question about updates) (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Mon, 01 May 2006 07:40:25 -0500
In my daily reading of this list, I have noted quite a bit of contrast in the opinions of Orion owners regarding their Orion radio. I can't help but wonder if the ones who hate their Orion are those
/archives//html/TenTec/2006-05/msg00054.html (10,447 bytes)

114. Re: [TenTec] Happy Orion owners (was question about updates) (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Tue, 02 May 2006 07:25:54 -0500
Maybe it is a love hate relationship? Note previous post "O2 FM NFG..." This may express some form of love, but obviously the poster is not too fond of his Orion at least the FM part. I have noted co
/archives//html/TenTec/2006-05/msg00098.html (14,327 bytes)

115. Re: [TenTec] If you ground it - it will come! (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Fri, 05 May 2006 17:26:05 -0500
You may not have to put the lid on the ceramic crock. Jim de wd4air _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listi
/archives//html/TenTec/2006-05/msg00274.html (13,558 bytes)

116. Re: [TenTec] Relay for Corsair, argosy (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Wed, 17 May 2006 21:31:43 -0500
I am assuming that you are going to use the supplied power cable, that has an extra pair of wires, if you do you could just connect the pair that is routed to the power switch on the Corsair, in seri
/archives//html/TenTec/2006-05/msg00531.html (9,485 bytes)

117. Re: [TenTec] AM, was "Just noticed ..." (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Tue, 13 Jun 2006 08:39:19 -0500
I was under the impression that SSB suppressed carrier is a form of AM (unless modulated by a single sinusoidal audio tone). _______________________________________________ TenTec mailing list TenTec
/archives//html/TenTec/2006-06/msg00234.html (12,239 bytes)

118. Re: [TenTec] SDR-1000 (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Wed, 12 Jul 2006 21:06:01 -0500
Is this -160 dbm? What is the level of ambient noise? Would it be less than 1 micromicromicromicro watts. The point is what good is having a sensitivity that would allow detection of signals that are
/archives//html/TenTec/2006-07/msg00388.html (8,825 bytes)

119. Re: [TenTec] SDR-1000 (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Fri, 14 Jul 2006 06:47:43 -0500
I was under the impression that noise was partially caused by temperature (molecular activity). I know that the sun causes noise, as I used to observe the sun strobe on the FAA long range radar I mai
/archives//html/TenTec/2006-07/msg00449.html (10,785 bytes)

120. Re: [TenTec] SDR-1000 (score: 1)
Author: "James Duffer" <dufferjames@hotmail.com>
Date: Sat, 15 Jul 2006 08:14:50 -0500
What is your take on the post which stated the SDR-1000 was to have a MDS of "-160?" My two main HF radios, an Omni VI, and a FT-1000D have, I believe a decent MDS, but it still seems that ambient no
/archives//html/TenTec/2006-07/msg00469.html (11,511 bytes)

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