[Elecraft] BNC Connectors

[Brett Howard]

Looks like the RG223 that I selected isn't all that great for high power
either...  And I knew that RG-58 was trash and I would never use it at
work but as far as home use I always figured meh it works good enough...
As far as what I consider acceptable at work it sure is pretty low
rent.... ;)

Looks like the RG217 that I loved to use so much when I built our EMC
compliance lab is still some very top notch stuff...  But its spendy!
Oh well thankfully I'm still pretty happy with 100 Watts for now...  And
the three cables that I bought are designated to be coming directly from
the K3.  Thus with my 6 foot runs for RG-223 will only account for a
third of a dB of loss and will get me into my LP-100A just fine (and
maybe even get me into an Amp some day) but I find better antennas a LOT
more exciting of a prospect than an amp at the moment.

~Brett (KC7OTG)

On Thu, 2010-01-28 at 12:40 -0600, Radio Amateur N5GE wrote:
> On Wed, 27 Jan 2010 22:35:35 -0800, Brett Howard
> <brett at livecomputers.com> wrote:
> 
> Using the Times Microwave Attenuation and Power Handling Calculator
> Downloadable from: http://www.timesmicrowave.com/cable_calculators/,
> I found that RG58 standard coax has .15dB attenuation at a length of
> 1.5 feet.
> 
> If one were using this as a jumper between a Transverter or Rig and an
> Amplifier the loss would be acceptable, but not as a hook up from the
> amp to a feedthrough connector in the wall or something like that. The
> power handling capability of an eighteen inch piece like that is only
> 130 watts.
> 
> Tom, N5GE
> 
> n5ge at n5ge.com
> K3 #806 with SUB RX, K3 #1055, PR6,
> XV144, XV432, KRC2,
> W1, 2 W2's and other small kits
> 
> 1 K144XV on order
> 
> http://www.n5ge.com
> http://www.swotrc.net 
> 
> >I've done a good portion of building a K2, and completely built a K1...
> >But amazingly enough I've never solder terminated a coax link...  I
> >guess I've always preferred the look of professionally terminated
> >cabling.  But now I need a few simple short patch cables.  In the shack
> >I have a decent amount 60+ foot or so of RG58/U and then around 120 foot
> >or so of RG58/AU...  Pretty much seems about to be the same stuff with
> >one stranded center and the other solid center conductor.  I feel for HF
> >use this coax should be ample for a few 18" patches... Anyone disagree?
> >I may end up using these for VHF as well but doubtful I'd do much of
> >anything over 150Mhz.  I'm not married to using the cordage that I have
> >on hand but it would be nice to be able to use that stuff....  If there
> >is something that would fit better feel free to advise.  (I've always
> >been a fan of RG-8x for HAM use and I use RG-217 or better at work
> >always but like I said I'm not terminating those myself...)
> >
> >I've attempted to do this with PL-259 connectors before and was
> >unsuccessful (but I tried to use a less than optimal soldering iron and
> >it took too long to get things hot and I ended up with a short in the
> >end).  I've now bought an adequate dual temp weller gun and should have
> >better success.  
> >
> >So I guess for the next real question where would one recommend to get
> >PL-259 and BNC connectors for this job.  Should I go for solder on or
> >crimp on?  I'm more than willing to spend the money for a good crimp
> >tool if need be and its a better option.  
> >
> >Anyway I'm open to recommendations as to where one should procure the
> >connectors as well as any tips, tricks, and opinions on what I should
> >use (so long as the opinions come with explanations). ;)
> >
> >Thanks kindly gentlemen.
> >
> >~Brett (KC7OTG)
> [snip]
> 
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