Per-Åke Andersson wrote:
Ian White, G3SEK wrote:
Is there a source of ANZAC component data on the web?
I'm looking specifically for data on the THV-50 2-port hybrid (power
divider) and the CD-50-4 4-port hybrid.


In "1970 product summary" I found under Hybrids 0-180 degrees:
CD-50 (no -4)
Frequency 80-1000 MHz (note Octave Coverage)
Max. loss 0.5dB
Max.Unbalance 2 degrees 0.3 dB
Max. SWR 1.5:1
Min. Isolation 25 dB
Power rating (Watts) 50

Some help I think. But you need a catalogue from mid/late 70 or
very early 80:th. (Its not in the 1984 cat.)
Fig. 4 could be the connector type, but in this 1970 cat the
connecor is B , N, S, T (BNC N SMA TNC).

Thank you, Per-Åke!

It is indeed a 1/180deg hybrid coupler. At last, I think I understand
the little drawing on the label.

The module is a square box with a port on each side. If you inject a
signal into any port, it seems there will be a null at the port on the
opposite side of the module; but only if the impedances connected to the
other two ports are equal. So one use could be as a return loss bridge.

Alternatively, with a load terminating the opposite port, the two side
ports can be used as either a 0deg or a 180deg hybrid power divider with
good isolation between the output ports (and that 50W power rating looks
interesting).

The frequency range on the label says 175-350MHz, so maybe the "-4"
indicates an option.

Well, all that gives me something to go on. Next stop will be to sweep
it in the various connection modes, to see what loss and isolation it
really does have... and of course how well it performs at 144MHz and
432MHz.

Once again, thank you all very much!


--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek