domu
Newbie level 4
I need to combine output from two antennas to send it down
through approx. 50m single coax run to feed two receivers.
ANTENNA 1 is for 1040-1090 (Mode2/ADS-B), ANTENNA 2 is for
118-136 (Airband). I am aware that combining input from two
antennas may be challenging, but since those antennas are
dedicated for their respective bands - I speculate that it
wouldn't be a source of major problems. And just to stay
safe I would add bandpass filter ~1050 on the output from
ANTENNA1. I understand that 50m coax run, plus combiner
and splitter will introduce significant loses to the signal,
hence I would add masthead amplifiers for both antennas.
Below is ASCII diagram of what I hope would work:
I do not have any expertise in this field, this is one time
project, and I doubt if I ever will return to this subject
again. Just need to solve the problem, and want to do it as
good as possible. Therefore, I have a couple of questions:
- would it work ?
- is there a better solution ? (must be single coax)
- what coax could I use (RG-8/U,RG213,LM400,CNT400,9914F) ?
- what amp/splitter/combiner would you recommend ?
- does it matter how those two antennas are far apart ?
Thank you for any helpful answers.
through approx. 50m single coax run to feed two receivers.
ANTENNA 1 is for 1040-1090 (Mode2/ADS-B), ANTENNA 2 is for
118-136 (Airband). I am aware that combining input from two
antennas may be challenging, but since those antennas are
dedicated for their respective bands - I speculate that it
wouldn't be a source of major problems. And just to stay
safe I would add bandpass filter ~1050 on the output from
ANTENNA1. I understand that 50m coax run, plus combiner
and splitter will introduce significant loses to the signal,
hence I would add masthead amplifiers for both antennas.
Below is ASCII diagram of what I hope would work:
Code:
/-- POWER
ANT1 --B/P FILTER--M/H AMP --\ /-- RCVR1
COMBINER---COAX50m---SPLITTER
ANT2 ------------> M/H AMP --/ \-- RCVR2
I do not have any expertise in this field, this is one time
project, and I doubt if I ever will return to this subject
again. Just need to solve the problem, and want to do it as
good as possible. Therefore, I have a couple of questions:
- would it work ?
- is there a better solution ? (must be single coax)
- what coax could I use (RG-8/U,RG213,LM400,CNT400,9914F) ?
- what amp/splitter/combiner would you recommend ?
- does it matter how those two antennas are far apart ?
Thank you for any helpful answers.