The discussion around TFE reminds me of a question I have: What is the difference (advantage) of TFE per MIL-P-19468A over Diallyl Phthalate MIL-M-14F, type SDG? These are two common insulators used in PL-259 UHF Male connectors. My concern questions the differences using 1500 watts from 1.8 to 30 MHz. Thanks and 73! Tim K3LR