I finally bit the bullet and ripped apart one of my XPR-7550’s stubby antennas to modify it to accept/accommodate an external antenna.
As many of us XPR-7550 portable radio owners know (some the hard way), that the radio’s antenna intake needs a special type of an antenna with a unique connector. You could buy an OEM adapter to accommodate an external antenna if you have $200 big ones to shell.
I found this to be an interesting project for DIY – and consequently embarked on these next steps. I am not publishing this posting so others can replicate what I did here, but, for my own references and blogging journal standpoint. If you decide to do this with your own antenna and/or radio, please proceed at your own risk.
I had purchased the following minimal parts
acquired a couple of Motorola UHF stubby antennas from a dealer (~$12)
you will need at least one BNC to SMA male adapters