[Boatanchors] RG-174/U and BNC connectors?

[Eugene Hertz]

Hi all, few questions on connectors and cable.

I am setting up my shack and hope to use some short patch cables between devices using a 32 port bnc patch panel I acquired.

For example, I can patch the output of a radio to one of two TUs or the AF in on my PC sound card.  

Question 1. is, for HF work, is it a big problem if I happen to patch some antenna signal using rg59 if everything else is 50 ohm? Would it make any more/less difference for Tx (100W input transmitter) rather than Rx?

Question 2. is, for video, is it ok to use an rg 58 50 ohm for a short run? I have a vhf/uhf receiver that has video out, and the length from the Rx to the Video monitor is perfect for a 50 ohm patch cable I have lying around

Question 3. I would like to make up some of my own patch cables with bnc and some rg-174/u I acquired.  I am looking to find some cheap bnc connectors (either solder or crimp) and came across this. Can anyone recommend anything better/cheaper?

http://www.alliedelec.com/cart/ProductDetail.asp?SKU=319-0006&SEARCH=bnc+174&ID=&DESC=112132

RFC31-315 on http://users.erols.com/rfc/bnc.htm

http://www.halted.com/commerce/ccp17119-conn--bnc-male-crimp-for-rg174-u-927b-phi136.htm

looks like the last is the cheapest at 1.29 each. Figuring I want 20 of 'em.

thanks for any advice
Eugene