[TowerTalk] Can 1/4" or 3/8" Andrew SUPERFLEX be used for a Rotor loop?

[Grant Saviers]

re crimp connections warming from a QRO amp:  Consider that DIN 7/16 
connectors are rated to 40KW peak (voltage limit) and 3KW continuous at 
800MHz and are all crimp (shield) or finger (conductor) clamp 
connections on Heliax.  So maybe only a few hams will exceed the 15KW 
limit for DIN mated AVA5/LDF5 or 5KW for LDF4 at 30 MHz ;)

The rating of connector is the limiting factor, not the connection type.

Grant KZ1W


On 7/17/2020 05:50, jimlux wrote:
> On 7/17/20 4:20 AM, Bill Steffey NY9H wrote:
>> Did anyone look at the M&P ( Italy) site ?
>>
>>
>> I've been involved for 20+ years with several divisions of what was 
>> CDT ( Mohawk, Montrose, West Penn Wire  etc) now merged into Belden 
>> Corp. Observed many braiding & bunching machines in operation.  I 
>> always understood that many of the best fabricating machines in the 
>> wire industry were made in Italy.  I drew a conclusion that coax form 
>> ITALY very well could be the best. That said , I watched several coax 
>> connector assembly videos provided BY M&P , and was surprised to see 
>> they suggest you do NOT solder the shield on either N type for PL-259. 
>> They must believe that the compression is adequate.  Why do I think 
>> that could be a warming while running that EXPERT KW ??????
>>
> 
> I think there's ample info out there that says that compression 
> connections (if properly made) are far superior to soldered connections. 
> The challenge is the "properly made" - I've not done big 1/2" coax, just 
> RG-58, microwave semi-rigid and regular old stranded wire. For all of 
> those, if you have the right tool, it's easy to make a good compression 
> connection that is gas tight, stands up to temperature cycling and 
> vibration, etc. I would imagine that the bigger connectors and cables 
> are the same.
> 
> However, it requires tooling specifically for your application, it isn't 
> necessarily cheap, and so forth.  If you're doing a few connectors a 
> month or year, as a hobby, it's hard to justify several hundred bucks 
> for a set of tools to cover all connectors and cable sizes.  I think 
> that's where soldering has its place (or ordering premade cables!)
> 
> When I was making dozens of cables in a day - it was easily worth the 
> money, especially for the RG58 BNCs for Thin Ethernet. Spin the stripper 
> around the cable, load the ferrule and connector, crimp, done. If it 
> took 30 seconds it was probably because I was distracted.  Same if 
> you're doing F connectors on RG-6 or RG-59.  There's no way I could have 
> soldered on a connector that fast, especially if I had to wait for the 
> iron to heat. And, in any case, that horrible polyethylene dielectric 
> would have melted.
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk