With regard to connectors for CATV Hardline ===>
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"From: Julius Fazekas <phriendly1@yahoo.com>
And "vintage" hardline connectors are going much cheaper than $30 for some
of the common small 50 ohm lines.
If you hunt around, even heliax is cheaper than some of the more popular
coax folks buy, and with better specifications to boot!
Julius Fazekas - N2WN .."
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I have used successfully at 1296MHz the common CATV connectors (those with
the long pointy center-pin protruding from the body of the connector) to
fabricate 'type-N' terminations for 1/2 and 3/4-inch CATV hardline.
Fabricate as follows:
- Remove the threaded 'sleeve' from a PL-259 male connector
- Carefully cut-off the non-threaded part of the 'sleeve'
- Thread the sleeve onto the CATV hardline connector
- Machine-off the non-threaded portion of a 75/50 Ohm female barrel (~1/8th
Inch) on the solid metal end
- Cut off 'just enough' of the long center-pin on the CATV connector to
allow full engagement into the
"N-Barrel" center-pin after being threaded into the 'sleeve'.
- Thoroughly tape/seal the CATV-connector/sleeve/N-Barrel to ensure a
water-proof seal.
NOTE: The CATV connector's center-pin diameter must be machined/filed to
match that of a male
N-connector to prevent damaging the center-pin 'fingers' on the
female N-Barrel.
The Z-bump presented when using 50-Ohm N-fittings and 75-Ohm coax at lower
frequencies should be a non-issue...
When you are machining the N-barrel for these connectors fabricate two
additional if you want make your own "Bird-like" wattmeter 'slugs' and
'slug-body' as described in the ARRL VHF Manual (3rd edition 2nd printing pp
317/18.) Mine work fine from 1296-to-3.5 MHz.
73 de Dick/w7wkr CN98pi
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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