[Boatanchors] CATV Cable

[K0EWU9]

Just ramblings about co-ax cable. 
the power handling cabibility with a 1;1 vswr will be limited by the
acceptable heating of the center condctor ie
IsqR losses, then as the vswr increases the losses in the dielectric may
a factor.
I have, in another life, measured voltage breakdown of many co-ax types ,
RG-174 thru RG-17, I have run 900 vdc in -174 and 
45kv in -17. These were of low currents tho.
jack (an other one)  K0EWU9 at juno.com

On Mon, 6 Jul 2009 09:03:10 -0700 "Jack Taylor" <jack at n7oo.com> writes:
> Another possibility is the older style "thicknet" Ethernet cable with 
> either 
> blue or yellow jackets.
> Similar to RG-8 foam in characteristics.  I use it at VHF and UHF.
> 
> Jack - N7OO
> 
> ----- Original Message ----- 
> From: <revcom at wbsnet.org>
> To: <boatanchors at mailman.qth.net>
> Sent: Monday, July 06, 2009 8:38 AM
> Subject: [Boatanchors] CATV Cable
> 
> 
> Biggest drawback using the CATV stuff was the connectors, having to 
> make
> "custom" units etc.  Typically it is not very flexible, another 
> drawback
> for some.
> 
> With todays availability of the between series adaptors, connectors 
> are no
> problem, just use the TV "F" connector and put on whatever adaptor 
> you
> need for type N, UHF, BNC, etc.  They make BNC and TNC crimp 
> connectors
> for RG-6, watch for the impedance of connector as different size 
> involved.
> 
> The big stuff, trunk runs, can be used if you don't want to bend it 
> too
> much.  A great percentage of it is solid aluminum outer with copper 
> plated
> aluminum center conductor.  The smaller stuff is typically, foil, 
> with
> braid shield and a copper plated steel center, still sorta stiff.  
> Losses
> are very low and as mentioned is readily availbable, especially in 
> runs
> that hams can use.  A lot of cable places will give it to you if you 
> haul
> it off.  Be carefull of kinks and knicks however.  They rarely 
> reuse
> connectors so they are 'gimmies' too.
> 
> Rod
> KØEQH
> 
> 
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