Hi,
I was also looking into these boards to add the 3rd channel and I found
out that all boards on eBay that have more than 3GHz you need to set the
SCALE to 4 otherwise it will not count correctly.
Below are the links for 12GHz and even 18GHz version:
18GHz Model:
12GHz Model:
Regards,
Razvan
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On 03/05/2024 19:23, Ed (scskits) via groups.io wrote:
Tony:
The 53131A had three options for the channel 3 input, 3GHz, 5GHz, and
12GHz.
I have never seen anything on EBAY over 3GHz installed in a unit.
I have seen Chinese Channel 3 boards for 3GHz (a lot of them) and 6GHz
(just 1) currently listed.
I do not see the 12GHz board listed at this time, although it was listed
in the past.
I did a board a few years back using the HMC432 (divide by 2) and two
HMC434 (divide by 8) that could get to 6GHz or higher.
A less expensive version would use the HMC432 driving an MC12079
programmed to divide by 64, have the layout for it but never made it.
Never did any follow up on these because the Chinese clone boards were
so inexpensive it was not worth pursuing.
ed
