[Elecraft] [K3] [P3] IF Out / IF In Cable

[Joel Black]

Well, to throw you all "out of whack," I used the 93ohm cable. There is 
no dielectric between the pin and shield.  My micrometer will not get in 
that space very well, but it appears that the diameter is ~1.20mm.  I 
have not noticed any "squirrely" problems so I'll keep it there for now.

Thanks again.

73,
Joel - W4JBB

On 9/17/2012 6:52 AM, David Moes wrote:
> Yes there is a difference. But according to Amphenol spec sheet, "Two
> distinct types of 75 Ω BNC's are available, and both mate with each
> other and with 50 Ω BNC's. the difference is in the dielectric
> This I doubt will be an issue at IF frequency.
>
> This is also backed up in the highly reliable Wikipedia article on BNC ;-)
>
> On 9/16/2012 11:11 PM, Alan Bloom wrote:
>> Yes, the cable impedance does not matter but the connectors do.  The
>> 75-ohm cable probably has 75-ohm BNC plugs, which as I recall have a
>> smaller pin.  They might not make reliable connections with the 50-ohm
>> sockets on the K3 and P3.
>>
>> Go ahead and try it, but if the connections seem flakey you should get a
>> real 50-ohm cable.
>>
>> Alan N1AL
>>
>>
>> On Sat, 2012-09-15 at 17:21 -0700, Jim Brown wrote:
>>> On 9/15/2012 5:01 PM, Vic K2VCO wrote:
>>>> Just try one of the non-50-ohm cables and see if it works
>>> Cable impedance absolutely does not matter for such a short run at the
>>> IF frequency.
>>>
>>> 73, Jim K9YC
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