[Elecraft] New KAT500 pics from the Visalia DX convention

Chuck Shefflette aa3cs at me.com
Tue Apr 24 21:29:30 EDT 2012


Oak Hills Research sells a kit with a female BNC and a punched plate sized to fit in place of a SO-239 for $5.00 each or two for $7.50. I have them on both of my K3s and quite a few other places in the shack. The ones that haven't been replaced wear adapters to BNC, all my cables are BNC... That reminds me, I've got to yoder a few more...

Chuck - AA3CS

Sent from my iPhone

On Apr 24, 2012, at 19:24, "David Ferrington, M0XDF" <M0XDF at Alphadene.co.uk> wrote:

> Is there an option to replace the SO239s on my K3 with BNCs?
> 
> Sent from my iPad
> 
> On 25 Apr 2012, at 00:15, Don Wilhelm <w3fpr at embarqmail.com> wrote:
> 
>> The 500 volts peak translates to 1250 watts at an SWR = 1.0, but the 
>> 1,500 V rms translates into 45 kW (also at SWR = 1.0)  if my calculator 
>> is correct.   In ant case, BNC connectors do not have a problem at the 
>> 500 watt level unless the SWR is high.
>> 
>> On 4/24/2012 6:57 PM, Ron D'Eau Claire wrote:
>>> BNC's can handle kilowatts of RF efficiently at reasonable SWRs. After all,
>>> the popular type N is simply a BNC with a screw-on outer shell.
>>> 
>>> Decent quality BNCs (e.g. Amphenol) are rated at 500 volts peak with a
>>> dielectric that will handle 1,500 V rms. That's 5 KW into 50 ohms, if my
>>> brain is working correctly, so they should handle the legal limit for US
>>> Hams into any reasonable SWR.
>>> 
>>> Ron AC7AC
>>> 
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