I must admit that the idea of having to pull the uhf, (& probably the radio) out of the dash is definitely not my idea of a pleasant aftenoon’s tinkering. I hate ‘in-dash’ stuff. I may have to bite the bullet & do it myself, but if I can find anyone who knows what they are doing in my area I would be sorely tempted. A guaranteed outcome would be worth letting a few moths out of my wallet. Any recommendations for local experts Apollofish or cgm?

Re ferrites, if I do do it myself ..... can you put too many ferrites on? Don’t want to be pulling out & re-fitting multiple times.

No idea what the swr is, let alone how to check it. Re checking for a short from the coax, would I just use the continuity buzzer? Which part of the coax should have continuity to the chassis, the inner wire or the foil sheath?