[Elecraft] 75 ohm cable on Buffered I.F. Output?

[Bert Rollen]

Thanks all for the replies.

With renewed inspiration, I have dug several options out of my junk-box,
including some 6" & some 24" heliax jumpers. They are N-type, but I can
adapt.

I also found a 8" LMR-400 jumper with BNCs on it, and a few other jumpers.

(I have waaaay to much crap around here)


73, Bert  

BTW, the K3 is a 1500+ serial no. , but has been fully updated at the
factory a few months back.  Only thing I am missing is the KIO3B and the
4-layer main-board (and have no intent to upgrade those).


-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Fred
Jensen
Sent: Friday, January 15, 2016 8:35 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] 75 ohm cable on Buffered I.F. Output?

No.  What will matter is the quality of the connectors.  The 1st IF output
from the K3 is low level, the P3 is basically a fairly sensitive HF
receiver, and bad connectors can create all sorts of problems.

You didn't give a S/N range for your K3, but there is a simple mod [destroy
one surface mount resistor and replace it with a non-SMC resistor] that will
raise the IF output.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org

On 1/15/2016 5:15 PM, Bert Rollen wrote:

> I am setting up a LP-PAN with my K3.

> Will I cause much problem by using a 75 ohm jumper on the IF ?  (I 
> happen to have several fairly nice 24" Belden 8263 BNC jumpers on hand).

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