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Title: SMA to BNC? Post by: WBear2GCR on October 22, 2009, 10:54:13 AM Ok, what is cheap and gets me from a female (outside threaded) SMA to a female BNC?? I have one of these SOFT66AD boards (thanks Guy!) and it needs for me to get from the little SMA to something I can actually put some co-ass onta, soze I cudbee uzin eet! I may have to look at some HP scope boards I have hanging about, maybe those are SMA with little coax on 'em but my recollection is that they are even smaller than this one... and maybe a one piece solution is better... gonna stuff this into a tiny box and see if it works on my larftop and be able to use it portable if nothing else... Any ideas? Remember I bee cheap... ;D _-_-bear Title: Re: SMA to BNC? Post by: K3ZS on October 22, 2009, 11:32:45 AM You need an adapter, but not gold plated like this one.
Title: Re: SMA to BNC? Post by: K3ZS on October 22, 2009, 11:37:28 AM Here is one from Mouser under $5, I think they mail it at actual mailing costs.
http://www.mouser.com/ProductDetail/Amphenol-Connex/242102/?qs=sGAEpiMZZMtVFuKNr6IGvjVSHHLmwSfd Title: Re: SMA to BNC? Post by: WQ9E on October 22, 2009, 11:37:46 AM Not sure how cheap is cheap but you could use one of these:
http://www.alltronics.com/cgi-bin/item/CZAB4/J/SMA-F-to-BNC-F-Adapter and one of these: http://www.alltronics.com/cgi-bin/item/CA910/J/SMA-M-M-Barrel-connector or go to the next hamfest and probably find exactly what you need. Rodger Title: Re: SMA to BNC? Post by: Art on October 23, 2009, 01:04:17 PM or . . . find an SMA jumper and put a BNC(F) on the other end. . . or vice verse. SMAs might have to be pillaged from old LNAs.
If you must buy one new eBay has them pretty regularly eg. http://cgi.ebay.com/BNC-Female-to-SMA-Male-Plug-Coax-Adapter-Connector-NEW_W0QQitemZ270473183519QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ef975411f $2.75 including shipping is not too bad. . . . its 11AM MDT and you have 2hrs to buy it. . . -ap Title: Re: SMA to BNC? Post by: K3ZS on October 23, 2009, 01:22:45 PM That one on ebay is goldplated no less.
Title: Re: SMA to BNC? Post by: WBear2GCR on October 26, 2009, 03:45:40 PM Thanks guys! I opted for an onshore source from ebay, figured the response time from HK might be longer, and ended up pulling the trigger for 4 pcs, final price inc ship-ping was 12 bux... so should be ok! Now if I can get the software to load... _-_-bear Title: Re: SMA to BNC? Post by: W2PFY on October 26, 2009, 04:06:50 PM Now that Bears needs are met I would like to know where I can get pre made coax cable in about a 4-6 foot length or longer with the SMA connectors already on the ends? I don't know what that 1/8 to 3/16 diameter coax is called?
Title: Re: SMA to BNC? Post by: W2PFY on October 26, 2009, 04:07:34 PM Now that Bears needs are met I would like to know where I can get pre made coax cable in about a 4-6 feet in length or longer with the SMA connectors already on the ends? I don't know what that 1/8 to 3/16 diameter coax is called? Title: Re: SMA to BNC? Post by: Jim KF2SY on October 26, 2009, 04:11:59 PM Now that Bears needs are met I would like to know where I can get pre made coax cable in about a 4-6 feet in length or longer with the SMA connectors already on the ends? I don't know what that 1/8 to 3/16 diameter coax is called? Terry, maybe these guys have what U need---- http://search.pasternack.com/Search.aspx?Query=sma Title: Re: SMA to BNC? Post by: K3ZS on October 26, 2009, 04:14:46 PM Here is a page at Mouser with cable assemblies, I like them because they don't rip you off with shipping and handling:
http://www.mouser.com/Wire-Cable/Cables-Cable-Assemblies/_/N-5gh1?Keyword=rg-174&FS=True The flexible cable is usually RG-174. Rigid, miniature hardline is usually called .141 coax. Title: Re: SMA to BNC? Post by: Art on October 26, 2009, 06:18:12 PM Hi Terry, AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
Yep, either of the cited sources are good. If you can use the RG-174 that's probably the most flexible if somewhat lossy. Maybe at HF the loss is not really significant. If you are going to go any more than a jumper think about using LMR240 Ultra. It's just under a quarter of an inch and has better specs than RG-8X at 1.3dB/100' at 30MHz and it will handle 1490W. Yeah, ~1.5KW in a quarter inch. If you are using an SMA you won't be at this level anyway. . . .You also might consider larger diameter coax if you will be shifting jumpers around as .174 jumpers tend to be a bit fragile on my bench. . . Art |