I kind of recall running into those for sale also
somtimes you see them on ebay . but usually just the main test pattern .
I emailed B&K and they no longer sell them .
It was worth a try .

I just picked up a 1076. Unfortunately it did not come with the schematic. I have the manual but the schematic and the parts list are missing. Would anyone happen to have one to share? Also I was wondering if someone could recommend a frequency counter I could use to align the 1076? There are many out there to choose from....

I've go a schematic for mine , I can scan it for you .
PM me with your email address :thmbsp:

My 1076 has a 20 UF 350v non-polarized cap. Any sub recommendations? AES has The Solens that are non-polarized but quite pricey. I didn't see any at Just Radio's.

You may be able to use two 40uF polarized caps in series with their negative pins together and the positives to the rest of the circuit. Do a Google search though; I have not tried this but it seems I had heard of the technique in the past.