RG-62 interconnect cables for SB301/303 and 401

[Chuck K3FT]

Question for the 'green cover' aficiando's out there.

Heath specified a specific length for the RG-62A/U 90 ohm coax cables which are
intereconnects between the SB301/303 and SB401 as being critical dimensions to adhere
to.  I've a need where I want to lengthen them and am curious as to WHY the exact
lengths are so critical. From what I can gather (by inference and observation) they are
specific lengths for matching issues. Question (which my 'fuzzy' logic is having
problems grasping...)  does anyone have any experience/knowledge on lengthening those
cables. I'm not sure what impedance they are trying to obtain (could plug the numbers
into a formula to calculate lengths to maintain this value).

Help appreciated!

73
Chuck k3ft

FYI - for those who might recall, I'm the one who is stuck in an apartment with a Heath
SB line. Well, it's amazing what a slinky antenna will do on HF! (Even 80!)

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