Michael Miramontes Posted February 6, 2013 Report Share Posted February 6, 2013 I was checking out an sma to bnc adapter on ebay and wasn't sure if it needed to be RF specific or if it will suffice. My goal is to connect some sma whips ( the one's that came with my QRX100) to the bnc connection on the PSC RF Multi SMA without compromising signal strength. Would this connector work or am I better off just buying a Lectro DIY whip kit and having a straight BNC connection? I don't mind doing this if it is the best option however I wouldn't mind saving a few bucks if the ebay connector will work just as good. Any info is appreciated. Quote Link to comment Share on other sites More sharing options...
cmassey Posted February 6, 2013 Report Share Posted February 6, 2013 Adapters will attenuate signals in almost all instances!!!! Quote Link to comment Share on other sites More sharing options...
nwstudios Posted February 6, 2013 Report Share Posted February 6, 2013 An Amphenol Mil Spec connector is probably going to be a better bet than a no name Chinese one. At 600mhz things are a lot more critical than HF or VHF. Quote Link to comment Share on other sites More sharing options...
LarryF Posted February 6, 2013 Report Share Posted February 6, 2013 You will lose a little but it is probably not measurable if it is a good quality adapter. Best, Larry F Lectro Quote Link to comment Share on other sites More sharing options...
nwstudios Posted February 7, 2013 Report Share Posted February 7, 2013 it is probably not measurable Sounds like you need a better network analyzer Quote Link to comment Share on other sites More sharing options...
Michael Miramontes Posted February 7, 2013 Author Report Share Posted February 7, 2013 You will lose a little but it is probably not measurable if it is a good quality adapter. Best, Larry F Lectro Larry, since you're such a cool dude I'll pick up a couple of your DIY whip kits since they're probably the best option. No sense spending all this money on RF stuff if a no-name connector may screw it all up. Thanks everyone for chiming in. Quote Link to comment Share on other sites More sharing options...
LarryF Posted February 7, 2013 Report Share Posted February 7, 2013 Sounds like you need a better network analyzer I probably should have said "not noticeable" but at 600 MHz for branded connectors, the loss is around 0.1 dB. And if our network analyzers aren't good, somebody is making a lot of money on us. <g>Cheers, Larry F Lectro Quote Link to comment Share on other sites More sharing options...
nwstudios Posted February 7, 2013 Report Share Posted February 7, 2013 I pretty much figured you could measure the difference between a clean and dirty connector at 600mhz..... Quote Link to comment Share on other sites More sharing options...
ChrisH Posted February 7, 2013 Report Share Posted February 7, 2013 I am interested in this as well since every connectors in the chain creates loss I am interested in actual Sma to Bnc cables so I can make my SR the 7/8 channel on my venue. My thought is one cable is better than a cable and an adaptor. Can anyone post the parts and cable I would need to a achieve this? I make loads of my own cables but finding 50 ohm BNC, Sma connectors that will fit on the same diameter 50 ohm rg-8 has confounded me!! Quote Link to comment Share on other sites More sharing options...
nwstudios Posted February 7, 2013 Report Share Posted February 7, 2013 I would stay away from anything that claims to be RG-8. Go with either RG 213 or LMR 400. Best bet for connectors would be to call a place like Digikey and tell them what you are trying to do. Quote Link to comment Share on other sites More sharing options...
Matt Martin Posted February 7, 2013 Report Share Posted February 7, 2013 I just recently used RFSupplier.com They have a custom cable wizard that allows you to choose your connectors (sma, Bnc, right angle, straight, etc....) and also choose your cable type and exact length. I have been very happy with the build quality and performance so far. http://www.rfsupplier.com/CustomCoaxWizard.php Quote Link to comment Share on other sites More sharing options...
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