[TowerTalk] 1 5/8" hardline to N female?

[Peter Sundberg]

I acquired 1-5/8" coax for my 432 and 1296 Mhz antennas and I did not have
any connectors for the cable. 

So I drilled a hole in the outer jacket about an inch from the end of the
coax and soldered a DIN 7/16 connector (an N-type would work as well),
flange of course to the outer and center pin to the inner conductor. Makes
a nice 90 degree "adaptor" if you know what I mean with the coax open
ended. (you solder the center pin from the end of the coax, down the center
conductor) 

Works very well, especially as my coax has foam dielectric, so water is not
getting in easily. I taped up the end of the coax properly, and voila, a
poor mans connector for heavy coax. SWR is fine and measured losses seem to
agree well with specifications for the cable, so I don't see any
deterioration because of the way the connectors are fitted.

It is pretty much the same technique as building your own power dividers
for vhf/uhf with hobby brass tubing.

73/Peter SM2CEW



At 11:53 2005-04-22 , Dave Anderson, K4SV wrote:
>Hi Bill,
>
>I am no expert but from the picture you have yourself
>a FM broadcast antenna.  I think these antennas are
>fed with rigid hardline because of the high power used
>20KW or so and the connection looks like a flange
>mount.  These antennas usually come in multiple
>element arrays using some sort of phasing harness.  It
>probably came off a tower that was being moved or
>dismantled. Try your local FM station engineer, he
>might be able to point you in the correct direction
>for a fitting.
>
>Dave...
>
>--- BILLMILOSZ at aol.com wrote:
>> I've been given an antenna that looks like it wants
>> 1 5/8" hardline ... 
>> here's a picture ...
>> http://www.lf.org/milosz/temp/input.jpg
>> 
>> How do I connect this to something NORMAL like an N
>> connector????
>> 
>> I've tried building things using pipe, tubing,
>> connectors, copper plates  etc 
>> and the SWR is awful, like, 5:1.....
>> 
>> 
>> Thanks
>> 
>> Bill
>> 
>> Chicago
>> _______________________________________________
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