18-08-2017, 05:16 PM
Hi Peter,
I had not considered DC on the coax during TX but I imagine there could be issues doing that especially at high power. I know for my FD preamps I only apply DC during RX. Leaving them powered during TX seems somehow wrong to me. I have used those preamps with IC275H, IC475H, IC910H and IC9100 (up to 100W) without any ill effects. Of course those radios are sequenced so the relays never hot switch.
Good work finding those masthead enclosures.
I had not considered DC on the coax during TX but I imagine there could be issues doing that especially at high power. I know for my FD preamps I only apply DC during RX. Leaving them powered during TX seems somehow wrong to me. I have used those preamps with IC275H, IC475H, IC910H and IC9100 (up to 100W) without any ill effects. Of course those radios are sequenced so the relays never hot switch.
Good work finding those masthead enclosures.