Hi, could anyone suggest or recommend a combiner for linking 2 parallel Yagi’s together, for 440MHz use? We’re already using for another project an m2inc 70cm 2port divider, which seems great, but here in Australia it’s super expensive (quote was about AU$900 for another one!) - can anyone suggest a cheaper alternative?
Thanks
Martin VK6MOR
WiMo have a few options:
Unsure what the situation is with WiMo shipping to Australia anymore…
The above are important if you are transmitting into the antennas. For receive only you could of course just use a wideband 2-1 combiner like a minicircuits ZFSC-2-1.
73
Mark VK5QI
1 Like
Hi Martin @morvan68,
You might need to give us a bit more info on what you are trying to do here. Are you phasing the antennas for circular polarisation, are you trying to phase them for higher gain, are you combining antennas pointing in different directions into a single trx or are you trying to do something else?
Looking at the M2 power combiner it appears to be a simple power divider and impedance matching unit….so I assume that you are looking phasing for higher gain.
Those sorts of phasing harnesses are pretty easy to build yourself using coax of various impedances and using a VNA to measure things……The only tricky bit is fitting the connectors and making it all waterproof.
There are plenty of examples on the internet.
Regards,
John - VK4JBE
Hi John, thanks - it would be combining for power/gain, rather than polarisation - the items Mark mentioned look like a nice place to start, maybe with some phasing matched cables, as we would be looking at transmit as well later down the line.
Cheers
Martin
Hi Mark, they look nice thanks - I’ll see what the shipping is like. Yes, transmit would be a possibly in the near future, so something like mentioned seems appropriate
Cheers
Martin