Back at it: experiments with harmonic mixers from the surplus pile

Its been a while since my last threat to post something.  I attended Microwave Update in St Louis and it was great to see many of the midwest microwave ops which got me back to building and experimenting.
My primary focus was to get back to building a spare 24 and 47GHz transverter.  47G had some challenges as I have yet to find any surplus made for that band that was not super expensive.  Even the surplus was pricey.  I found out about some Alcatel 38ghz detectors on the auction site that appeared to work good as harmonic multipliers.  I ordered a couple and gave them a try.  There are two SMA connectors and a WR28 input.  One of the SMA's goes to a 'detector' and the other goes to a diode assembly that would act as a multiplier - I dont know what the design intent of these were - power detectors?  Anyway, I fed the multiplier SMA with a 11.7GHz oscillator and listened for a signal with my cheap diode mixer/detector made out of an SMA flange and a diode from a Qualcom 'gold board'.  The IF was 432 MHz.  I found the test signal generated by the Alcatel mixer.  I tried the 'Detector' SMA but nothing was heard.  The picture below is of the Alcatel mixer being fed with the 11GHz brick (X4 multiplication)

I found this picture of the Mixer insides - the top is the 'multiplier' signal path, the lower is the detector signal path.  Supposedly there is a low pass filter in the detector path which explains it not working with the 11ghz brick.