Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+Omni\s+VI\+\s+receiver\s+UHF\s+intermod\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+Omni\s+VI\+\s+receiver\s+UHF\s+intermod\s*$/: 12 ]

Total 12 documents matching your query.

1. [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Jack Mandelman" <modeler@bellsouth.net>; Date: Wed, 12 Dec 2007 18:26:01 -0500; While tuning across 20m ssb with my recently acquired Omni VI plus I noticed what first appeared to be S5-6 splatter from a nearby signal. After closer inspection I realized that it was an FM modulat; /archives//html/TenTec/2007-12/msg00375.html (8,091 bytes)
2. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Wed, 12 Dec 2007 18:51:59 -0500; filter in front of the Omni VI+. Has anyone encountered or heard of a similar UHF intermod problem with the Omni VI? Jack K1VT" Déjà vu. I ran into the exact issue back in '92 when I p; /archives//html/TenTec/2007-12/msg00376.html (7,427 bytes)
3. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Jack Mandelman" <modeler@bellsouth.net>; Date: Wed, 12 Dec 2007 19:01:35 -0500; Paul, Guess I'll let the external LPF do the work and not add an internal LPF on the receive side. Should be very easy mod, but I'll leave the radio as original as possible. Jack K1VT filter in front; /archives//html/TenTec/2007-12/msg00377.html (8,908 bytes)
4. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Wed, 12 Dec 2007 18:02:26 -0600; I can sort of believe it happening. The LO is synthesized in that range and divided down to 5 MHz. I'd also check to see if the radio's internal band switched low pass filters weren't shorted out by; /archives//html/TenTec/2007-12/msg00378.html (8,681 bytes)
5. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Jack Mandelman" <modeler@bellsouth.net>; Date: Wed, 12 Dec 2007 21:21:56 -0500; In the OmniVI only TX rf is routed through the LPFs on the LP filter board; receive does not see the benefit of these LPFs. However BPFs on the front end board are used for both TX and RX. But in the; /archives//html/TenTec/2007-12/msg00379.html (9,204 bytes)
6. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Wed, 12 Dec 2007 22:43:10 -0600; One would hope that the diode on current and the diode blocking voltage were greater than the external UHF signal could apply to the diodes. But mixing could occur, between two or more external stron; /archives//html/TenTec/2007-12/msg00380.html (8,375 bytes)
7. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Thu, 13 Dec 2007 09:47:29 -0500; But what I did not do in the 13 years thereafter was to check for the problem after the PIN diodes were installed. The Viking filter was so unobtrusive that it just stayed there, out of sight, out o; /archives//html/TenTec/2007-12/msg00382.html (8,416 bytes)
8. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Thu, 13 Dec 2007 09:59:32 -0600; Actually in some instance this mixing could be taking place outside of the radio, such as a poor antenna connection, a corroded joint between a guy wire and a tower leg or just about anywhere else wh; /archives//html/TenTec/2007-12/msg00386.html (11,836 bytes)
9. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Jack Mandelman" <modeler@bellsouth.net>; Date: Thu, 13 Dec 2007 11:51:10 -0500; The interference not being present on my TS-940S and CorsairII suggests that it is being created within the OmniVI. I will check to see if the diodes are being properly switched and biased, and if ev; /archives//html/TenTec/2007-12/msg00392.html (13,907 bytes)
10. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Thu, 13 Dec 2007 12:42:27 -0600; And you reduced TVI causing harmonics which occasionally made for happier neighbors. It works. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.co; /archives//html/TenTec/2007-12/msg00398.html (9,607 bytes)
11. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: Kevin Purcell <kevinpurcell@pobox.com>; Date: Thu, 13 Dec 2007 13:09:18 -0800; Though to play the devil's advocate that if you do have a problem with something generating IMD in the front end (e.g. a flaky or poorly biased PIN diode or a connector with corrosion or whatever) th; /archives//html/TenTec/2007-12/msg00402.html (9,624 bytes)
12. Re: [TenTec] Omni VI+ receiver UHF intermod (score: 1): Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>; Date: Thu, 13 Dec 2007 09:36:14 -0800; significant Yes. It must be remembered that 1) ANY non-linear device can do this mixing; and 2) ANY network has stray components that make it act very differently from what is expected far from its d; /archives//html/TenTec/2007-12/msg00405.html (9,607 bytes)

Current List: 1 - 12
Page: [1]