fwiw, i bought the RG174 50ft at ~$10, thats 20 cents per foot length (seller chinarf in 2011 yes i have the stock record inventory), super cheap compared to Gore. its still usefull below 500MHz imho, but if i want to connect 5.8GHz antenna to it, i must get the length tuned to the frequency. i guess this is the reason why few of my rc transmitter got blown off, too much reflected signal damaging the rf amplifier/tranceiver's output. Gore's cable et al are not indestructable too they have their life limit, after that they go out of spec too. beside their bulky size not suitable for portable item like rc unit, the cost might be damaging on my side, so i will need some compromise on this..