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281. [TenTec] Orion Roofing Filter Cut In (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Thu, 05 Aug 2004 22:39:41 -0400; Bernard, at your invitation I quickly looked over your discussion and have to agree with Steve that Orion's design is not new. However I disagree with Steve in that the term "roofing filter" is also; /archives//html/TenTec/2004-08/msg00255.html (11,769 bytes)
282. [TenTec] Inrad #762 Info and Availability (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Fri, 06 Aug 2004 06:40:34 -0400; W4CAK: I suspect the price is around the same as their other filters. Last I heard deliveries should begin late Summer but I could be wrong. I got a note from George W2VJN about Inrad's #762 filter.; /archives//html/TenTec/2004-08/msg00271.html (9,211 bytes)
283. [TenTec] Orion Roofing Filter Cut In (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Fri, 06 Aug 2004 07:44:10 -0400; manual, TenTec refers to it but does not call it a roofing filter. The roofing filter hype didn't begin until the Orion. If you call outstanding IMD and BDR performance "hype", that began with Sherwo; /archives//html/TenTec/2004-08/msg00274.html (8,707 bytes)
284. [TenTec] Orion Roofing Filter Cut In (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Fri, 06 Aug 2004 08:31:18 -0400; WA4OEJ: kHz filters were too narrow because I have difficulty copying SSB signals that are less than 1.8 kHz. I think that 1.8 is just too narrow for me and possibly most SSB QSOs. I first noticed th; /archives//html/TenTec/2004-08/msg00278.html (9,060 bytes)
285. [TenTec] Orion Roofing Filter Cut In (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Mon, 09 Aug 2004 15:24:33 -0400; I was on a camping trip the past 3 days and was interested to verify this when I got back today. Indeed, Sinisa is right as usual. This has some very interesting implications for using PBT to positio; /archives//html/TenTec/2004-08/msg00368.html (9,624 bytes)
286. [TenTec] Inrad 762 & Roofing Filter Tutorial (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Tue, 10 Aug 2004 11:05:35 -0400; Inrad's #762 is now listed on Inrad's Ten-Tec page: http://www.qth.com/inrad/tentec_menu.htm (Note that price should be $80 and not $115) http://www.qth.com/inrad/graphs/762.gif Tutorial on roofing f; /archives//html/TenTec/2004-08/msg00408.html (7,533 bytes)
287. [TenTec] IC7800 Review: Why is this being covered here (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Tue, 10 Aug 2004 21:13:55 -0400; Orion v. Pro III Orion v. FT dx 9000 each to be dissected in agonizing detail. Sorry to disappoint you Rob...Icom used up all the superlative words in Webster's Dictionary for the 7800 so there will; /archives//html/TenTec/2004-08/msg00461.html (7,091 bytes)
288. [TenTec] Filters: ringing and insertion loss (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Wed, 11 Aug 2004 07:23:35 -0400; filters supposedly do. I also noticed that the INRAD filters have less insertion loss than the TenTec filters. filters not ringing and whether the INRAD filters do in fact have lower insertion loss?; /archives//html/TenTec/2004-08/msg00473.html (8,792 bytes)
289. [TenTec] FS Ten-Tec #219 250 Hz Filter (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Wed, 11 Aug 2004 12:11:45 -0400; Ten-Tec #219 250 Hz at 9.00075 MHz Filter. New from Ten-Tec October 2003 including factory performance curve indicating only 11.455 dB insertion loss which is well under Ten-Tec's specification of 14; /archives//html/TenTec/2004-08/msg00479.html (7,942 bytes)
290. [TenTec] INRAD 600Hz Orion filter arrived (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Wed, 11 Aug 2004 21:43:18 -0400; N5TW: putting the 1.8KHz filter in the 2.4KHz slot, I decided to leave the 1.8KHz filter where it was. Pretty easy to turn that on in SSB contests and have the flexibility of using the DSP filter in; /archives//html/TenTec/2004-08/msg00507.html (8,533 bytes)
291. [TenTec] INRAD 600Hz Orion filter arrived (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Wed, 11 Aug 2004 22:18:44 -0400; Are there any Omni VI, FT-1000MP or IC-7800 experts out there? I am very curious to know whether these radios shift their roofing filter (1st IF) with PBT or shift only their lower IF's. From my reco; /archives//html/TenTec/2004-08/msg00540.html (8,394 bytes)
292. [TenTec] Where do the filters go (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Thu, 12 Aug 2004 09:55:10 -0400; as being unnecessary. However, the 1.8Khz filter could be helpful if the rig is used for ssb contesting. The 1.8 is also very useful as a wider roofing filter when scanning CW with a bandwidth wider; /archives//html/TenTec/2004-08/msg00542.html (7,890 bytes)
293. [TenTec] Where do the filters go (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Fri, 13 Aug 2004 08:20:24 -0400; Well, being a CW only op, I have to disagree with this just a little. My Orion does not have the 1.8kc filter, so today when I received my 600hz filter, I moved the 1kc filter into the empty 1.8kc p; /archives//html/TenTec/2004-08/msg00591.html (11,266 bytes)
294. [TenTec] Where do the filters go (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Fri, 13 Aug 2004 23:15:24 -0400; why would a company release an unfinished product? We all know the reason for that. And yes, they can be used as 'simple bandpass' filters, but it's my understanding that was not the intent, and the; /archives//html/TenTec/2004-08/msg00600.html (9,618 bytes)
295. [TenTec] Orion - TT #218 1.8 Filter (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Sat, 14 Aug 2004 09:39:06 -0400; absolutely remarkable. Man, what a difference. If there is any interfering stations that are close, engaging this filter wipes them out 100%. Inrad's entire article on Roofing Filters is worth readin; /archives//html/TenTec/2004-08/msg00611.html (9,506 bytes)
296. [TenTec] Inrad 762 (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Sat, 14 Aug 2004 11:10:50 -0400; Orion. Since the 1khz filter does an excellent job down to 380 hz, would this not be a better use of the 762? That won't work very well for several reasons: 1. The 500 slot always has the second ampl; /archives//html/TenTec/2004-08/msg00617.html (9,229 bytes)
297. [TenTec] Inrad 762 (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Sat, 14 Aug 2004 15:20:23 -0400; it's stated bandwidth, but not down to 100hz.. There is actually no advertised IMD performance...just some published measurements made by Sherwood and unpublished by Sherwood and others. Here is why; /archives//html/TenTec/2004-08/msg00640.html (11,102 bytes)
298. [TenTec] Inrad 762 (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Sun, 15 Aug 2004 09:20:24 -0400; little line above the filter bandwidth display still shortens at 360hz as if the 500hz filter is cutting in. It also shortens again at 190hz as if the 250 filter was in although I have never owned on; /archives//html/TenTec/2004-08/msg00663.html (10,793 bytes)
299. [TenTec] The QSK of QSK (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Mon, 16 Aug 2004 21:22:31 -0400; dits, AND know it's the DX not another station trying for him just like me? You don't need to "hear between the dits" to do this. I've used foot switches exclusively for both CW and SSB many years i; /archives//html/TenTec/2004-08/msg00733.html (8,501 bytes)
300. [TenTec] The QSK of QSK (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Tue, 17 Aug 2004 07:32:24 -0400; On the other hand, Bill notes that while he does not use a mode on his radios called full QSK, he DOES listen often using his foot switch. That's correct. I first used QSK with the E.F. Johnson T-R S; /archives//html/TenTec/2004-08/msg00754.html (10,841 bytes)

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