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Total 17 documents matching your query.

1. [Amps] Power handling of an SMA (score: 1): Author: Patrick Barthelow <apolloeme@live.com>; Date: Mon, 25 Apr 2011 05:59:49 -0700; Does anyone know the spec for power handling capability for SMA connectors, at 1.296 ghz? Also, the often found hardline interconnect cable for that connector, that I would say is about 3 mm in diame; /archives//html/Amps/2011-04/msg00514.html (6,705 bytes)
2. Re: [Amps] Power handling of an SMA (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Mon, 25 Apr 2011 10:27:40 -0400; Are you referring to UT-141 semi rigid? The 141 happens to be the outside diameter in INCHES as in .141" Google will show several conversations about SMA ratings. Carl KM1H __________________________; /archives//html/Amps/2011-04/msg00518.html (7,700 bytes)
3. Re: [Amps] Power handling of an SMA (score: 1): Author: Steve <g8gsq72@gmail.com>; Date: Tue, 26 Apr 2011 17:03:32 +0100; Suhner data shows approx. 500W based on dielectric strength, but there's a second 'low SWR' curve on the chart which extrapolates to around 1500W at 1.3GHz. The spec. also gives 10kW for 1us. The con; /archives//html/Amps/2011-04/msg00544.html (7,282 bytes)
4. Re: [Amps] Power handling of an SMA (score: 1): Author: "Sam Carpenter" <sam@owenscommunication.com>; Date: Tue, 26 Apr 2011 13:07:42 -0400; As your figures from Suhner shows, .5kw is all I will do with an N at 800 and up. I think you find that with DB Spectra, Celwave, Andrews and other makers of filters in that range. It is pretty stand; /archives//html/Amps/2011-04/msg00546.html (8,738 bytes)
5. Re: [Amps] Power handling of an SMA (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 26 Apr 2011 17:03:48 -0400; A 30 Ohm connector that is 1" long will not even show a bump thru at least 6M and they are still OK on 2M. Some UHF articles have stated they are a perfect 50 Ohms at 1296, dont know.I use them at lo; /archives//html/Amps/2011-04/msg00548.html (11,000 bytes)
6. Re: [Amps] Power handling of an SMA (score: 1): Author: "Sam Carpenter" <sam@owenscommunication.com>; Date: Tue, 26 Apr 2011 17:30:28 -0400; They work ok but will show up on a good res time domain reflectometer or keen oscilloscope at 150 mhz. I can tell a barrel splice from a 30-50-30 squiggle on the tape or screen wherever it is on the; /archives//html/Amps/2011-04/msg00549.html (11,952 bytes)
7. Re: [Amps] Power handling of an SMA (score: 1): Author: Steve Thompson <g8gsq72@gmail.com>; Date: Tue, 26 Apr 2011 22:48:01 +0100; I suspect a lot of issues with 259s arise from the variation in materials. I see lots with nylon and brown 'plastic' (bakelite or SRBP?) insulation which I wouldn't trust under stress or with age. Th; /archives//html/Amps/2011-04/msg00552.html (8,188 bytes)
8. Re: [Amps] Power handling of an SMA (score: 1): Author: Shane Youhouse <kd6vxi@gmail.com>; Date: Tue, 26 Apr 2011 16:02:51 -0700; The other (huge) thing not being mentioned is weatherproofing. I have both weatherproof and non, and the diff in price between flavors is nil: ie, REAL weatherproof PL259s are the same price as their; /archives//html/Amps/2011-04/msg00553.html (9,728 bytes)
9. Re: [Amps] Power handling of an SMA (score: 1): Author: Steve Thompson <g8gsq72@gmail.com>; Date: Wed, 27 Apr 2011 08:20:06 +0100; I found big differences in N type socket construction where the centre contact is captive (mostly 4 hole or bulkhead sockets). With Amphenol, for example, the pin has a bit of knurling to lock it int; /archives//html/Amps/2011-04/msg00554.html (9,186 bytes)
10. Re: [Amps] Power handling of an SMA (score: 1): Author: "Roger (sub1)" <sub1@rogerhalstead.com>; Date: Wed, 27 Apr 2011 06:08:23 -0400; It's also one of the weaknesses of N-type connectors on long vertical runs as the center pin tends to pull back and lose connection with the female connector. This is quite common with those long ver; /archives//html/Amps/2011-04/msg00555.html (11,365 bytes)
11. [Amps] Power handling of an SMA (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Wed, 27 Apr 2011 04:57:59 -0700; I suspect a lot of issues with 259s arise from the variation in materials. I see lots with nylon and brown 'plastic' (bakelite or SRBP?) insulation which I wouldn't trust under stress or with age. Th; /archives//html/Amps/2011-04/msg00556.html (10,489 bytes)
12. Re: [Amps] Power handling of an SMA (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 27 Apr 2011 09:28:41 -0400; ** Tin the nickel ones first. I do a batch at a time of NOS Amphenols I picked up back in the R-K days with a solder pot. Flux up, dip in pot and bang hard to remove excess. Is VGE still in business?; /archives//html/Amps/2011-04/msg00558.html (10,298 bytes)
13. Re: [Amps] Power handling of an SMA (score: 1): Author: Ron Youvan <ka4inm@tampabay.rr.com>; Date: Wed, 27 Apr 2011 09:49:43 -0400; I have used, used PL259s that the solder didn't want to stick to, so I drilled out the holes (two at a time) with a drill bit a we bit larger than the original hole and the bare brass soldered like a; /archives//html/Amps/2011-04/msg00560.html (8,344 bytes)
14. Re: [Amps] Power handling of an SMA (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Wed, 27 Apr 2011 15:36:42 +0100; Another trick is to file across each of the 4 holes with a 1/8in round file. File away to almost the full depth of the hole, leaving just a thin feather-edge of bare brass which is much easier to sol; /archives//html/Amps/2011-04/msg00561.html (8,874 bytes)
15. Re: [Amps] Power handling of an SMA (score: 1): Author: donroden@hiwaay.net; Date: Wed, 27 Apr 2011 12:26:20 -0500; I drill out the holes to a larger size. I also pre-tin the braid and then I cut the braid with a razor knife. Don W4DNR _______________________________________________ Amps mailing list Amps@contesti; /archives//html/Amps/2011-04/msg00562.html (8,073 bytes)
16. Re: [Amps] Power handling of an SMA (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 27 Apr 2011 15:42:42 -0400; That would seem to just require more of an area to solder Thats how I was taught in the Navy, in 1959. These days I use a tubing cutter but I only tin solid dielectric coax, not foam. Carl KM1H _____; /archives//html/Amps/2011-04/msg00563.html (8,677 bytes)
17. Re: [Amps] Power handling of an SMA (score: 1): Author: "Joe Giacobello, K2XX" <k2xx@swva.net>; Date: Wed, 27 Apr 2011 17:44:49 -0400; I learned the pre-tinning and tubing cutter trick that Karl describes from a W6SAI book on wire antennas. Some time back I learned the trick of roughing up the surface around the PL-259's holes. I'm; /archives//html/Amps/2011-04/msg00564.html (9,779 bytes)

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