There are 50 ohm and 72 ohm BNC's. They look the same. They differ in the pin details and dielectric used.
See for example: http://www.milestek.com/blog/index.php/2011/04/50-ohm-vs-75-ohm-bnc-connectors-explained/ They supposedly can be plugged in to the "other type" without damage. I'm not sure just what that means. 73 de Brian/K3KO On 8/17/2012 17:15, Rowland R Johnson wrote: > I had the same problem. Replacing the BNC coax cable (between the P3 and > K3) with one I had lying around fixed it. Howard at Elecraft tech > support then sent a new cable that arrived 36 hours after I talked to > him. This new cable from Elecraft worked fine, for a while, but then > started having the same kinds of problems. I put my old cable that I had > lying around back on and it's worked for several months now. > > I haven't pursued getting a second replacement from Elecraft because it > hardly seems worthwhile. In addition, it's not 100% clear to me that the > problem is the cable. With the 2 Elecraft cables I've noticed some > difficulty in connecting the BNC plug to the BNC receptacle on the back > of the P3. Not so with my old cable. The supposition being that the > physical dimensions of BNC receptacle on the P3 aren't quite right. > Whereas the new cables have a problem fitting, my old cable may be worn > enough that it fits anyway. > > > On 8/17/2012 9:00 AM, Gene Trasti wrote: >>> P3 with svga >>> >>> I have a considerable amount of "hash" on my panadapter screen. It tracks >>> the same spot on all bands. All my equipment is very well grounded. I >>> have measured my shack for RFI-it is very clean. I swapped out my >>> switching power supply for a highly filtered one. I even purchased a >>> pretty expensive ac terminal strip with isolation transformers. I have >>> been through the house and have virtually switched off and unplugged >>> everything-nothing seems to help. This hash takes up a pretty healthy >>> portion of the bandwidth. Any sugestions would be appreciated. Is it >>> possible that this could be a problem with the P3 or K3 they are both >>> factory built-although I added the svga board using a wrist ground.. >>> >>> >>> Gene. W6jmp >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> > ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2178 / Virus Database: 2437/5205 - Release Date: 08/17/12 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
