28-69-02A (or B), garden-variety 4" 4-cavity pass/reject, fixed loops, BNC
connectors, the typical duplexer for 3 MHz split applications. The only
difference between A and B is the mounting brackets (one is front-mount, the
other has added brackets for rear-mount).
28-69-01A for 4-cavity 6-5/8" diameter pass/reject. Adjustable coupling
loops - can be set for less or more coupling to adjust insertion loss versus
notch depth/passband performance or for splits less than 3 MHz.
28-69-04A same as above, except 6 cavities. Overkill for most applications,
but for those that want more...
By the way, if anyone is in the market for any TX-RX hardware, email me
direct, I have to put in a large order in the next couple of weeks, very
good discounts available.
--- Jeff WN3A
