[TowerTalk] Tex Com LMR-600 Connectors

[TexasRF at aol.com]

Roger, I know you know this but will mention adding a two or three inch  
piece of heat shrink (like the Times connectors) will add a lot of strength to 
 the cable/connector interface.
 
As far as water getting through the threaded part, one should never use any 
 connector outside without water protection. It is not optional if you want 
long  connector life.
 
The 3M linerless rubber tape works very well and is available at Home Depot 
 or Lowes most anywhere. We carry Diamond and Times Microwave versions of 
the  rubber tape; they also work well but not any better than the 3M product.
 
Thanks for your  recent order!
 
73,
Gerald K5GW
CEO Texas Towers
 
 
 
In a message dated 8/8/2013 1:46:55 P.M. Pacific Daylight Time,  
K8RI-on-TowerTalk at tm.net writes:

On  8/4/2013 4:28 PM, rfman45 wrote:
>
> Texas Towers has a  compression UHF connector for LMR 600, the CC600UM. 
I'd like to know
>  if anyone has used this connector, its ease of use, etc.

I received  some today. These appear to be the same or very much like the 
ones I've  been using, available from Davis as well.

They are a very simple "clamp  type" of connector with a solder type 
brass center pin that appears to be  gold plated.   The center pin is not 
captive so you need to  measure and cut carefully. The clamp (similar to 
an "N-type) gives a good  weather seal to the jacket, but they are still 
UHF with little resistance  to water ingress at the threaded connection.

They are Nickle plated  which stands up better in the weather here, but 
when properly weather  proofed none of the connector is exposed anyway. 
Not my choice  for  above HF, but have worked well on HF.

As I use them (UHF) on 160 and 75  QRO where the SWR can get quite high I 
ream the center bulkhead out a bit  with an end mill to increase the 
clearance.  It probably does little,  but I've shorted a number of N 
type. Whether due to lightening or power,  I'm not sure.

At any rate it's nice to see some UHF connectors  available for LMR-600. 
For a while only type N were available.
The only  fault I find with these is they do not handle sideways pressure 
well and  tend to have the threaded collar break off.  IOW Make sure to 
come  straight off the connector, or at least have no side  pressure.

73

Roger (K8RI)

>
> Thanks in advance  for any comments.
>
>               Mike  W2LO
>              
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