XPost: uk.radio.amateur   
   From: kinvig.netta@ntlworld.com   
      
   "Rambo"  wrote in message   
   news:6slgpclvlactn7os9fvqgsqt4ishia8qtl@4ax.com...   
   > On Sat, 19 Aug 2017 15:35:41 +0100, "Jimbo"   
   >  wrote:   
   >   
   >>   
   >>"Ian Jackson"  wrote in message   
   >>news:1M0ZGuBgmCmZFwJs@brattleho.plus.com...   
   >>> In message , Gareth's Downstairs Computer   
   >>>  writes   
   >>>>On 19/08/2017 10:34, Jimbo wrote:   
   >>>>>> sexes).   
   >>>>>    when I was newly licensed and poor I used 75 ohm TV coax and   
   >>>>> belling   
   >>>>> lee   
   >>>>> connectors on HF and got away with it .......   
   >>>>>   
   >>>>   
   >>>>And it was standard on 145MHz. (QQV03-10 anyone?)   
   >>>   
   >>> Actually, the original B&L connector is a pretty good 75 ohm match up to   
   >>> 1GHz and more. If I remember correctly, many 50 ohm BNCs are not so hot   
   >>> >500MHz. With 75 ohms, the problem is maintaining the structural return   
   >>> loss constant while having enough PTFE insulation to hold the pin in   
   >>> place. Some are only really good to around 200Mhz. Of course, for most   
   >>> purposes, both are usable to much higher frequencies.   
   >>>   
   >>> And mixable!   
   >>>>   
   >>>>   
   >>>>   
   >>I got a load of weird connectors and adaptors from a guy that worked at   
   >>the   
   >>sub base at New London in 1979 ...still using them ......   
   >>   
   > Type 43 connector?   
      
   no idea  ... oh was that a submarine joke? ....   
      
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