XPost: uk.radio.amateur
From: Rambo@thisaintreal.org
On Sat, 19 Aug 2017 20:33:52 +0100, "Jimbo"
wrote:
>
>"Rambo" wrote in message
>news:nlvgpcldm48b4gm1nampgvf93a6ml0idv9@4ax.com...
>> On Sat, 19 Aug 2017 16:53:49 +0100, "Jimbo"
>> wrote:
>>
>>>
>>>"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? ....
>>>
>> No it's a coax connector
>>
>> http://www.servicepower.co.uk/category/co-axial/type-43-connectors/
>
>no don't think I have any of those ......
>
I've seen too bloody many !!!!
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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