[R-390] AN/URM-25s

[Barry]

> For all of their good qualities, R390As 
> are particularly egregious offenders -- they leak RF like a sieve, so 
> ANY leakage from your sig gen will make them appear to have very high 
> sensitivity.
>
<snip>
> 
> Best regards,
> 
> Don

I don't understand how the radio leaking RF determines whether a leaking generator will get into the radio.  I understand that a leaking generator can get into the radio but don't see what the radio leaking has to do with it.  Is it because if the radio leaks, then there's a path for RF in either direction?

Sorry, but the way that's worded, it just doesn't quite make sense to me.

Thanks,
Barry - N4BUQ