"ml" wrote in message
...
hi

I was wanting to dispel some myths about connector losses

lets assume my worst case freq 450mhz LOW /week singal work

lets assume my worst coax is ether lmr400 or 600 (not imp )

so naturally i'd use typically N connectors

how much do i lose if I screw in a right angle adapter?

in general at the base of a radio

and same question say i want to join to lengths of coax and use a
small stubby f/f N connector adapter ??


lose going from a DIN to an N via a adapter?? at radio and 'inline'

joining 2 coax lengths


some say the loss is actually neg some say it's going to add up and
the insertion loss could easily go over 1/2 db i dunno


I can help a little, just not at 450 MHz.

In the 1970's I had the TV system on an aircraft carrier for maintenance.
One slow day at sea, I tested the connector-loss stories. I took the
longest piece of RG-59 I had (about 60' or so) and measured the loss around
60 MHz, Channel 3, the freq of my test generator. Next, I joined about ten
pieces of RG-59 together to make the same length and repeated the
measurement. I was surprised at my result: only about 1 dB more loss.
Certainly nothing like the mythical 1 dB per connector figure that had been
bandied about. Plus, crimped-on F-59 connectors have nothing to recommend
them, compared to N-type connectors we use for UHF hamming. I did not
have any right-angle F-connectors to test then. I have some now and I have
modulators I can tune to UHF to source a stable signal. Maybe I'll run some
more tests.