[TowerTalk] ...and another coax adapter question

Jack Brindle jackbrindle at me.com
Fri Nov 24 17:29:39 EST 2023


One of the big problems with off-brand connectors and adapters is their power handling capabilities. This is especially noted in the right-angle adapter. We see a lot of arcing when higher power is applied. 
Higher power in this case is anything above just a few hundred watts. Whenever I see an amplifier log report with a lot of high reflected power or PA Dissipation faults, I immediately start looking at the 
connectors and feed line for problems. These are usually found in one of several places - right angle adapters, and baluns that were meant for low power, but have been over-stressed with high
power.

My advice? If the right-angle adapters aren’t Amphenol, throw them out.

73,
Jack, W6FB


> On Nov 24, 2023, at 12:59 PM, Scott Townley <scott at nx7u.net> wrote:
> 
> Say I have a pile of coax adapters on my bench (we all do, right?).
> 
> How do I separate the wheat from the chaff?  I have a fully equipped bench...I would think the go-to would be a TDR measurement.  Any better/additional suggestions?
> 
> TIA,
> 
> -- 
> Scott NX7U
> 
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