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Total 307 documents matching your query.

141. Re: [TenTec] Orion Roofing Filter Cut In (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Fri, 06 Aug 2004 03:53:02 -0400
Not true. It is easy to verify that PBT functions correctly with both filters at 2400 Hz, or any other value. No, Orion normally uses only the central part of roofing filter's BW in order to prevent
/archives//html/TenTec/2004-08/msg00262.html (9,874 bytes)

142. Re: [TenTec] Orion Roofing Filter Cut In (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Fri, 06 Aug 2004 04:55:46 -0400
I'd say it is quite good. Only the flat [central] part of roofing filter's passband passes through the DSP filter and DSP filter's passband flatness is mostly preserved. Also, group delay variation o
/archives//html/TenTec/2004-08/msg00266.html (9,876 bytes)

143. Re: [TenTec] When is a filter roofing? (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Fri, 06 Aug 2004 05:17:30 -0400
When it's good enough to serve as a "real" filter :-) 73, Sinisa YT1NT, VA3TTN _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/ma
/archives//html/TenTec/2004-08/msg00268.html (6,843 bytes)

144. Re: [TenTec] G3SJX IC-7800 review (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Mon, 09 Aug 2004 16:04:52 -0400
Systematically or at random, like Orion? 73, Sinisa YT1NT, VA3TTN _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinf
/archives//html/TenTec/2004-08/msg00370.html (6,906 bytes)

145. Re: [TenTec] ORION QRQ Performance (long) (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Thu, 19 Aug 2004 04:26:55 -0400
... Hi Bob, several months (and revisions) earlier, I performed detailed measurements and found that quality of transmitted CW greatly varied with code speed, time between characters/words and especi
/archives//html/TenTec/2004-08/msg00866.html (7,527 bytes)

146. Re: [TenTec] ORION QRQ tests (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Thu, 19 Aug 2004 16:31:15 -0400
Unfortunately, Orion's TX seems to operate "full QSK" all the time. There is a CW PTT input now, but TT choose not to use it to prepare TX for transmission. PTT is only used for external amp control.
/archives//html/TenTec/2004-08/msg00880.html (7,897 bytes)

147. Re: [TenTec] ORION QRQ tests (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Thu, 19 Aug 2004 17:54:29 -0400
Are you sure that it actually holds TX active, as opposed to just delaying receive audio? 73, Sinisa YT1NT, VA3TTN _______________________________________________ TenTec mailing list TenTec@contestin
/archives//html/TenTec/2004-08/msg00887.html (8,029 bytes)

148. Re: TT [TenTec] Orion sub receiver (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Fri, 03 Sep 2004 10:07:04 -0400
I don't recall sub RX refusing to work upon start-up, but on many occasions it did cease to operate later. 73, Sinisa YT1NT, VA3TTN off _______________________________________________ TenTec mailing
/archives//html/TenTec/2004-09/msg00051.html (7,890 bytes)

149. Re: [TenTec] Sweep display freezing on Orion (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Mon, 06 Sep 2004 10:56:53 -0400
Orion's AGC works pretty well and your experience is probably caused by specific AGC settings at the time. For high QRN conditions you may consider reducing AGC hold time to 0, and increasing AGC De
/archives//html/TenTec/2004-09/msg00123.html (8,267 bytes)

150. Re: [TenTec] Sweep display freezing on Orion (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Tue, 07 Sep 2004 02:54:10 -0400
Well, I have 100 kW Radio Nis on 711 kHz 3 miles away, and never noticed any problem with Orion (or Mk5). Although my Orion certainly has some problems (and I never hesitated to report them), strong
/archives//html/TenTec/2004-09/msg00145.html (9,056 bytes)

151. Re: [TenTec] Sweep display freezing on Orion (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Tue, 07 Sep 2004 02:56:22 -0400
I find it most appropriate to report one's first impressions, as long as the report is based on facts. 73, Sinisa YT1NT, VA3TTN _______________________________________________ TenTec mailing list Ten
/archives//html/TenTec/2004-09/msg00146.html (9,712 bytes)

152. Re: [TenTec] RF (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Fri, 10 Sep 2004 19:27:51 -0400
The source of the problem is probably in the antenna feeding. What's your antenna? 73, Sinisa YT1NT, VA3TTN _______________________________________________ TenTec mailing list TenTec@contesting.com h
/archives//html/TenTec/2004-09/msg00324.html (7,378 bytes)

153. Re: [TenTec] Tentec roofing filters and Inrad filters for the Orion. (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Sat, 18 Sep 2004 04:43:37 -0400
Bandwidths are approximately the same: INRAD 761 1913 Hz @ -6 dB, 3250 Hz @ -60 dB TenTec 218 1903 Hz @ -6 dB, 3171 Hz @ -60 dB Inrad data from the web site, TeTec data mine. 73, Sinisa YT1NT, VA3TTN
/archives//html/TenTec/2004-09/msg00460.html (7,833 bytes)

154. Re: [TenTec] Tentec roofing filters and Inrad filters for the Orion. (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Sat, 18 Sep 2004 04:44:45 -0400
No, it isn't, there is no place for a sticker, all TenTec filters come on bare boards without case. 73, Sinisa YT1NT, VA3TTN _______________________________________________ TenTec mailing list TenTec
/archives//html/TenTec/2004-09/msg00461.html (7,246 bytes)

155. Re: [TenTec] Software Testing (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Mon, 20 Sep 2004 03:32:26 -0400
Has the art of software testing made any progress since Dijkstra's conjecture (almost 40 years ago) that it can only prove the presence of errors, but not their absence? 73, Sinisa YT1NT, VA3TTN ____
/archives//html/TenTec/2004-09/msg00506.html (7,048 bytes)

156. Re: [TenTec] Orion sweep (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Mon, 20 Sep 2004 10:54:30 -0400
Signal path is as follows: * board A3: * first mixer (Q1-Q4) * amplifier (Q24) * pre-roofing crystal filter (X1, X2) * board A4: * source follower (Q17) * two stage amp with local AGC (Q13, Q14) * bo
/archives//html/TenTec/2004-09/msg00510.html (7,031 bytes)

157. Re: [TenTec] QSK (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Tue, 16 Nov 2004 07:07:30 -0500
Morse timing has two aspects. Dit/pause ratio is very important and the value of 1 : 1 is actually optimal, i.e. it transmits the maximum possible "amount of information" for the given average power.
/archives//html/TenTec/2004-11/msg00381.html (7,717 bytes)

158. Re: [TenTec] WTB - Orion (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Sat, 20 Nov 2004 23:03:28 -0500
Tom's complaints are firmware related and reproducible on any other Orion loaded with the same firmware. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list Te
/archives//html/TenTec/2004-11/msg00458.html (7,031 bytes)

159. Re: [TenTec] Tentec Orion & Oscilloscope question (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Tue, 23 Nov 2004 19:43:07 -0500
The simplest way is to use a 100 W 30 dB attenuator. You can find them on eBay at reasonable prices. If you want to transmit actual waves, then some form of coupler can be used. You could try an old
/archives//html/TenTec/2004-11/msg00550.html (7,226 bytes)

160. Re: [TenTec] IP3 controversy (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Thu, 25 Nov 2004 08:17:04 -0500
... Dynamic range cannot be fully described by a single number. Two independent numbers are needed to fully define both ends of the range (just like any other range). IP3 or dynamic range alone, or b
/archives//html/TenTec/2004-11/msg00660.html (7,917 bytes)

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