Search String: Display: Description: Sort:

Results:

References: [ +from:ghoffman@spacetech.com: 567 ]

Total 567 documents matching your query.

141. Re: [TenTec] Hooking up Omni VII to computer ---direct--- how? (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sun, 27 Apr 2008 16:11:53 -0400
You are right of course. Not too many N equipped systems around yet though, especially among hams. But one could never use up that much bandwidth in a ham environment, in my opinion. As to the other
/archives//html/TenTec/2008-04/msg00484.html (14,762 bytes)

142. Re: [TenTec] OT (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Tue, 4 Mar 2008 17:10:20 -0500
Not only does ozone attack rubber, but also most plastics. Even coax. Ever wonder why tie-wraps outside break so soon ? (except the special ones) Stay away from it. Its also corrosive....so if you ge
/archives//html/TenTec/2008-03/msg00067.html (11,410 bytes)

143. Re: [TenTec] OT (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Tue, 4 Mar 2008 17:14:05 -0500
I'm not Carter obviously, but yes, he is right. When I worked for Kodak we made copiers, and we had to massively filter the output cooling air so that all ozone was removed. It is law. The studies sh
/archives//html/TenTec/2008-03/msg00068.html (13,233 bytes)

144. Re: [TenTec] Ozone detector. (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Tue, 4 Mar 2008 17:19:47 -0500
We had expensive instruments at Kodak. Several thousand dollars. They worked on a UV absorption system, which split a light beam and compared the intensity after one beam went through ozone and the o
/archives//html/TenTec/2008-03/msg00069.html (10,775 bytes)

145. Re: [TenTec] OT (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Tue, 4 Mar 2008 18:37:52 -0500
John, You can kill stuff with ozone...so you can purify air and water that way of biological stuff....but you can't let it get out of course. But general air cleaning, by low concentrations of ozone.
/archives//html/TenTec/2008-03/msg00073.html (15,808 bytes)

146. Re: [TenTec] OT (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Tue, 4 Mar 2008 18:46:18 -0500
It is true absolutely that UV also attacks plastics
/archives//html/TenTec/2008-03/msg00075.html (9,167 bytes)

147. Re: [TenTec] OT (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Wed, 5 Mar 2008 14:43:26 -0500
Well...Ozone is a chemical.... it is 03 (subscripted of course) meaning it is three oxygen atoms linked together. This is unstable, and has a net charge ( i.e. not neutral) so it is an ion. Whether y
/archives//html/TenTec/2008-03/msg00094.html (11,598 bytes)

148. Re: [TenTec] USB-Serial Adapters for Pegasus (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sat, 8 Mar 2008 17:21:07 -0500
A db9 serial to USB CABLE adaptor ???? It must be more than that. The serial and USB protocols are completely different. Its not a matter of wires. There must be more to the product than that....perh
/archives//html/TenTec/2008-03/msg00136.html (11,764 bytes)

149. Re: [TenTec] USB-Serial Adapters for Pegasus (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sat, 8 Mar 2008 17:21:49 -0500
ah ha ! "It comes with software". There ya go. with no [mailto:tentec-bounces@contesting.com] ____________________________________________________________________________
/archives//html/TenTec/2008-03/msg00137.html (12,572 bytes)

150. Re: [TenTec] Corsair II Problem (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Thu, 20 Mar 2008 20:30:19 -0400
Remember too to tighten all the board hold down screws. They relax their grip over time and sometimes also there is oxidation. This badly affects the grounds. this about until
/archives//html/TenTec/2008-03/msg00261.html (10,287 bytes)

151. Re: [TenTec] New rubber trim pieces for TT knobs.... (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sun, 23 Mar 2008 21:06:38 -0400
When I mounted my Ten Tec license plate on my shack wall, the signal to noise ratio of all of my receivers improved by almost 10 dB. 73 de Gary, AA2IZ pieces offered for the later TT equipment. But,
/archives//html/TenTec/2008-03/msg00298.html (9,350 bytes)

152. Re: [TenTec] Ameritron amp issues and looking for a Centaur (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Mon, 31 Mar 2008 23:40:05 -0400
Well this sounds like a classic case of VHF parasitic oscillation in the amp. I'm sure you thought of this already. As you may know, these so called glitches frequently take out the bandswitch as wel
/archives//html/TenTec/2008-03/msg00399.html (12,661 bytes)

153. Re: [TenTec] Ameritron amp issues and looking for a Centaur (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Mon, 31 Mar 2008 23:51:36 -0400
And here is a question (no answer yet)..... Does anyone think that hot switching an amp (perhaps by using the tune switch as described below) can TRIGGER a VHF parasitic ?? I have no trouble recogniz
/archives//html/TenTec/2008-03/msg00400.html (12,355 bytes)

154. Re: [TenTec] Jupiter w A/T ettings for Digital(PSK31) Communications (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Fri, 1 Feb 2008 00:56:52 -0500
I imagine Jerry is right. But my comment is that high power at ALC limit levels is not needed or desirable in PSK. As most here already know, it is regular practice to operate with only a very modest
/archives//html/TenTec/2008-02/msg00000.html (10,564 bytes)

155. Re: [TenTec] ORION II CW pile up readability (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sat, 2 Feb 2008 20:43:38 -0500
This is great stuff. I am not too surprised to see that adding in the RF gain produced a 10 db (actually a little more) improvement in the minimum discernable signal. That is what one would hope for.
/archives//html/TenTec/2008-02/msg00037.html (13,589 bytes)

156. Re: [TenTec] Digital (PSK31) Communications (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sat, 2 Feb 2008 20:58:18 -0500
I am always amazed at how effectively very weak PSK transmissions are decoded by the software. I attribute this in part to the very narrow signal bandwidth, which as you all know, concentrates the po
/archives//html/TenTec/2008-02/msg00038.html (10,428 bytes)

157. Re: [TenTec] Omni V Maximum voltage (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Tue, 5 Feb 2008 18:30:38 -0500
Rick is correct. Modern alternators are of necessity set to higher charging voltages, usually around 14.5 volts or more, because the newer batteries in cars require these voltages for proper charging
/archives//html/TenTec/2008-02/msg00097.html (10,997 bytes)

158. Re: [TenTec] Centaur Power Cord (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sat, 5 Jan 2008 14:16:17 -0500
Well on 220 volt systems there is no neutral as such. Only two hot leads, and ground. One would expect that the green wire is ground of course. That leaves the other two as hot. 73 de Gary, AA2IZ sta
/archives//html/TenTec/2008-01/msg00090.html (10,103 bytes)

159. Re: [TenTec] Centaur Power Cord (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sat, 5 Jan 2008 14:22:57 -0500
No manufacturer could ever sell something that ran load current on the ground wire. They would create a massively unsafe condition, and in the event that the worst happened, they would be sued out of
/archives//html/TenTec/2008-01/msg00091.html (15,887 bytes)

160. Re: [TenTec] Centaur Power Cord (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sat, 5 Jan 2008 14:45:13 -0500
You are right of course, my reply was US-centric. Sorry for the confusion. Gary leads, That
/archives//html/TenTec/2008-01/msg00094.html (9,963 bytes)


This search system is powered by Namazu