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21. Re: [TenTec] 1208 Transverter (score: 1): Author: Stuart Rohre <rohre@arlut.utexas.edu>; Date: Tue, 13 Jan 2009 18:33:36 -0600; David, The 1N4007 die is much larger and more rugged than the ordinary silicon diode die of the 1N4148. It has been shown to work in other RF switching circuits, and they are very low cost, since the; /archives//html/TenTec/2009-01/msg00113.html (8,720 bytes)
22. Re: [TenTec] 1208 Transverter (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Tue, 13 Jan 2009 18:25:49 -0600; You can probably get a few for that much at your local RS. But on line they won't guarantee what their package of 25 for $2.79 contains. 1N4007 are 25/$1 at http://www.danssmallpartsandkits.net/ who; /archives//html/TenTec/2009-01/msg00114.html (8,884 bytes)
23. Re: [TenTec] 1208 Transverter (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Tue, 13 Jan 2009 18:29:22 -0600; I think there is only upside. The 1N4007 is a better RF switch than the 1N4148, but not as good as a diode made to be a PIN diode. The 1N4007 has an intrinsic region to give it better high voltage pe; /archives//html/TenTec/2009-01/msg00115.html (9,254 bytes)
24. Re: [TenTec] 1208 Transverter (score: 1): Author: Bwana Bob <wb2vuf@gti.net>; Date: Tue, 13 Jan 2009 21:12:54 -0500; Well, you could build a "swamping pad", a resistive attenuator with a dummy load. Run the Corsair at full power but set up the resistor values so that 95% of the power goes into the dummy load and 5%; /archives//html/TenTec/2009-01/msg00118.html (9,480 bytes)
25. Re: [TenTec] 1208 Transverter (score: 1): Author: David Cuttler <davidcuttler@yahoo.com>; Date: Wed, 14 Jan 2009 07:55:35 -0800 (PST); So what will the operational difference be if I replace the "real" pin diode with one of the other types like the 1N4007? _______________________________________________ TenTec mailing list TenTec@; /archives//html/TenTec/2009-01/msg00121.html (8,138 bytes)
26. Re: [TenTec] 1208 Transverter (score: 1): Author: "N4PY" <n4py@arrl.net>; Date: Wed, 14 Jan 2009 12:41:12 -0500; I saw no difference at all even with 1N4148's which are not pin diodes. Carl Moreschi N4PY 121 Little Bell Drive Bell Mountain Hays, NC 28635 -- Original Message -- From: "David Cuttler" <davidcuttle; /archives//html/TenTec/2009-01/msg00122.html (9,108 bytes)
27. Re: [TenTec] 1208 Transverter (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Wed, 14 Jan 2009 11:58:24 -0600; There will greater intermod both receive and transmit with the 1N4007 over the true PIN diode, and more than that with the 1N4148. I know I've seen an article on the topic, probably in VHF Communicat; /archives//html/TenTec/2009-01/msg00123.html (9,208 bytes)
28. Re: [TenTec] 1208 Transverter (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Wed, 14 Jan 2009 12:39:18 -0600; Comment - these transverters aren't known to be great performers in areas where multiple VHF and UHF commercial equipment is being operated. Anything that contributes to intermod either on RX or TX c; /archives//html/TenTec/2009-01/msg00124.html (11,100 bytes)
29. Re: [TenTec] 1208 Transverter (score: 1): Author: "N4PY" <n4py@arrl.net>; Date: Wed, 14 Jan 2009 13:41:57 -0500; These 2 diodes are on the 14 mhz path, not the 50 mhz path. Carl Moreschi N4PY 121 Little Bell Drive Bell Mountain Hays, NC 28635 -- Original Message -- From: "Dr. Gerald N. Johnson" <geraldj@storm.w; /archives//html/TenTec/2009-01/msg00125.html (10,089 bytes)
30. Re: [TenTec] 1208 Transverter (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Wed, 14 Jan 2009 13:16:11 -0600; But on receive they see the whole RF bandwidth, at least 5 or 6 MHz, and on transmit they see all the components of the transmitted SSB signal. In either case they can contribute intermod products, w; /archives//html/TenTec/2009-01/msg00126.html (9,339 bytes)
31. Re: [TenTec] 1208 Transverter (score: 1): Author: Stuart Rohre <rohre@arlut.utexas.edu>; Date: Wed, 14 Jan 2009 14:21:01 -0600; Dan's Small Parts in Montana is a reliable on line vendor. Many over on the QRP reflectors have used him for component purchases. I would not go for large quantities for bargain prices from unknown a; /archives//html/TenTec/2009-01/msg00128.html (9,635 bytes)
32. Re: [TenTec] 1208 Transverter (score: 1): Author: David Cuttler <davidcuttler@yahoo.com>; Date: Wed, 14 Jan 2009 20:42:17 -0800 (PST); Again, I want to thank everyone for their input. I learned a lot, and I am sure that anyone else lurking in the backround has too. This is what I plan to do. I will unsolder the two diodes, and sol; /archives//html/TenTec/2009-01/msg00133.html (8,630 bytes)
33. Re: [TenTec] 1208 Transverter (score: 1): Author: <waltk8cv4612amos@att.net>; Date: Thu, 15 Jan 2009 08:54:21 -0500; Dude .......... why not just buy a stand alone 2 meter rig for a $100 and be done with it ? Walt K8CV Royal Oak, MI. Again, I want to thank everyone for their input. I learned a lot, and I am sure th; /archives//html/TenTec/2009-01/msg00134.html (9,315 bytes)
34. Re: [TenTec] 1208 Transverter (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Thu, 15 Jan 2009 09:21:26 -0600; What stand along $100 2m rig does CW and SSB (nearly as well as the CorsairII)? And is as compact as the 1208? 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenT; /archives//html/TenTec/2009-01/msg00135.html (8,759 bytes)
35. Re: [TenTec] 1208 Transverter (score: 1): Author: Stuart Rohre <rohre@arlut.utexas.edu>; Date: Thu, 15 Jan 2009 15:38:36 -0600; A sturdier way to plug in the experimental diodes is to solder them to a segment of a DIP or SIP header that can plug into the socket segment that gets mounted to the transverter board. Since this is; /archives//html/TenTec/2009-01/msg00141.html (8,887 bytes)
36. Re: [TenTec] 1208 Transverter (score: 1): Author: Rick Williams <ve7asr@yahoo.com>; Date: Thu, 15 Jan 2009 15:39:32 -0800 (PST); Call me crazy - BUT Dude .... he may just want to work 6 metres and some mode other than FM? Rick VE7TK Dude .......... why not just buy a stand alone 2 meter rig for a $100 and be done with it ? Wal; /archives//html/TenTec/2009-01/msg00144.html (8,523 bytes)
37. Re: [TenTec] 1208 Transverter (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Thu, 15 Jan 2009 17:45:12 -0600; Because a $100 2 meter rig won't work 6 meters. I think that's a pretty good reason to start with. 73 Bob K4TAX _______________________________________________ TenTec mailing list TenTec@contesting.c; /archives//html/TenTec/2009-01/msg00146.html (10,651 bytes)
38. Re: [TenTec] 1208 Transverter (score: 1): Author: Steve Berg <wa9jml@tbc.net>; Date: Thu, 15 Jan 2009 18:02:11 -0600; I used one of these transverters with my Argonaut II, and managed to work all continents with it barefoot into a 4 element beam during the last F2 cycle. I found that it worked extremely well, and is; /archives//html/TenTec/2009-01/msg00147.html (9,254 bytes)
39. Re: [TenTec] 1208 Transverter (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Thu, 15 Jan 2009 18:19:59 -0600; A word about using transverters with any HF rig. Unless the rig specifically provides a "transverter output" one needs to take certain precautions to prevent problems and at the same time produce goo; /archives//html/TenTec/2009-01/msg00149.html (11,695 bytes)
40. Re: [TenTec] 1208 Transverter (score: 1): Author: "JD & KK McCrary" <w4wuq@arrl.net>; Date: Thu, 15 Jan 2009 19:22:47 -0600; I have not seen a $100, 2 meter radio that works CW, AM, SSB and FM on 6 meters yet. Dude .......... why not just buy a stand alone 2 meter rig for a $100 and be done with it ? Walt K8CV Royal Oak, M; /archives//html/TenTec/2009-01/msg00155.html (10,198 bytes)

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