I tried N female barrels for bulkheads and didn't feel they made a good
connection. I planned on installing them on grounding brackets at the
top and bottom of the tower. After installed in the ground
bracket(http://www.dxengineering.com/parts/dxe-cgb-150), one side didn't
seem to make a good solid connection to the N Male connector as it was a
bit too short.
After researching and trying a few connectors I settled on the following:
- N Male connectors for the LMR-600
http://www.ebay.com/itm/QUICK-TYPE-10-Packs-N-male-crimp-connector-1-2-LMR-600-CA600-RF-Coaxial-Cable-/131217432221?
These are self captivating on the center conductor and crimp around the
shield.
- N Female to PL-259 adapters
https://www.tessco.com/products/displayProductInfo.do?sku=94997
At HF I don't think there's much loss to be concerned about with the
adapters. I'm using stack match's and poly phaser's that already were
setup with SO-239's which is the reason for the adapters. If I was
starting from scratch on all of the devices I would try to go N all the way.
W9AC will probably chime in on the barrel's and I would trust his
suggestions.
Rich - N5ZC
On 8/5/2015 8:07 PM, mike stokes wrote:
Where is the best place to buy good N female barrels ?
Mike
KK9V
On Wed, Aug 5, 2015 at 8:35 PM, Paul Christensen <w9ac@arrl.net> wrote:
What do you prefer for your LMR-600 end connectors, female or male or does
it make any difference?
N4CC and I recently used male N connectors on both ends of the LMR-600
runs. The copper bulkhead we use for our external ground bus is loaded with
Polyphaser and Transitrap devices that come with female connectors on both
sides. So, in our case, it was kind of a no-brainer to use male connectors
on the shack end of the LMR-600 runs.
On the antenna end, we also used male N connectors with N female barrels
that join short lengths of RG-213 to the antenna feeds. This facilitates
VNA measurements looking into either direction of the cable without having
to hunt down a gender-change jumper cable or adapter in mid air. The
barrel is just broken apart for measurements into either the source or load
end of the line.
Paul, W9AC
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