[NLRS] It works!

[Zack Widup]

I bought those boards directly from W1GHZ. Really good prices!

I went about it differently. I built up a KD6OZH phase-locking circuit using
a 94.75 MHz crystal which is locked to a 10 MHz OCXO. Paul told me that if I
used the same capacitor values for the first filter in the 756 MHz LO
circuit that the 1152 MHz filter uses, it should multiply 94.75 MHz just
fine to 758 MHz. I was curious about one thing, however. He uses an MAR-6
for the final output stage of the LO board and according to the Minicircuits
specs, the output at 1-dB compression point is only +3 dBm. I couldn't
figure out how he was getting +7 dBm out of his.

I built the whole thing up and got +2 dBm from the LO board. Seemed about
right to me for an MAR-6. I sent an e-mail to Paul about this and he thought
either he got some "hot" MAR-6's or the parts were mislabeled. Not a
problem, though, because you can always add another MMIC on the transverter
board to get the +7 dBm needed for the mixer.

Are you actually getting +6.7 dBm out of an MAR-6?

I haven't gotten the whole transverter built up yet but I plan on using some
903 MHz helical filters between the input/output stages and the power
amp/receiver LNA. I built a WD5AGO/W5LUA preamp using the ATF36077/MGF61563
lineup as the LNA.

73, Zack W9SZ

On Wed, May 12, 2010 at 1:19 PM, David Palm <thepalmhq at gmail.com> wrote:

>
>
> I'm really not going to give you the blow by blow of my W1GHZ transverter
> adventures on the e-mail list......really, I'm not ;o)
>
> But I did get my 756 MHz LO working today.  Full story at
> http://w9hq.blogspot.com
>
> 73,
>
> David  W9HQ
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