I attend at least half a dozen hamfests (ham radio fleamarkets) every year either as a buyer or as vendor. It has been more than 25 years of fun and I still love it. I get all excited and can "smell RF" when approaching the site (I told you I become frenzy!). Here are some tips that will help you get the maximum out of these fleamarkets:
It is inevitable, the question always comes back: How to seal coaxial connectors and couplingsexposed to the elements? Everyone use their own technique with more or less success, it must be said ...
Of course, there is this malleable and sticky tape called "CoaxSeal". This product works very well, and I recommend it. The problem is that it is difficult to find and rather expensive, and I never have it handy when I need it.
I have perfected my own technique over the years. It uses two readily available products: