[NLRS] Power on 5760 MHz

[Dr. Gerald N. Johnson]

Take a look at: www.minikits.com.au/eme141.htm More gain in one package 
and readily available.

73, Jerry, K0CQ

On 11/7/2012 11:15 PM, tosca005 at umn.edu wrote:
>
>
> My 5760 transverter is an older 10 mW Down East Microwave model. I have a
> few options for boosting the power up to a more competitive level, but
> while browsing the listings on eBay, I came across a few items that looked
> appealing to me and might interest other folks in the same boat as I:
>
> Item 400182916307, a pair of PC boards for a RFMD/Sirenza 4.9-5.9GHz 1Watt
> SZA-5044Z RF MMIC Power Amplifier in 4mmx4mm QFN Package -- $11.99 for the
> pair, has "more than 10 available", has sold 110 of them so far.
>
> Item 260605336283, a package of 5 of the MMIC chips that fit on the above
> boards -- $13.99 for the set of 5, 3 sets available, 5 sold so far.
>
> These would provide about 22 dbm maximum output power at 5760 MHz, so a
> noticeable bump from 10 mW (10 dbm), but still pretty low. So why bother?
> Because the next item below needs 18 dbm in to produce a pretty healthy 5
> watts or 37 dbm of output power.
>
> Buy 5 of the board sets and 2 of the MMIC sets and you could build 10
> boards... Strange choice of grouping the sales if you ask me. And of
> course, you would need to add the various chip caps, chip resistors, chip
> inductor, and SMA in and out connectors, and be comfortable with surface
> mount components (which I'm not). But could be a group project if a number
> of people wanted assembled boards and someone in the group wanted to tackle
> it for those of us less adept at assembling microwave components...
>
> Then, I also saw the following item that would nicely complement the above
> pre-driver boards to bring them up to a genuine 5 watt level:
>
> Item 250983172827, a 4.8-6.7 GHz 5W Power Amplifier M/A-com MAAPGM0060 --
> from the spec sheets, it appears that 18 dbm in would give the 37 dbm (5
> watt) output that the part is capable of generating, and since the prior
> item could provide up to 22 dbm, it seems that 5 watts from 10 mW is
> doable. Unfortunately this last item is selling for $120, whereas the prior
> ones are priced low enough to entice me to experiment. As far as I can
> tell, this item is just the module itself, so a board would need to be
> created to use it.
>
> Anyone want to offer comments on these items? Or is everyone else already
> at power levels above a watt or 5 on this band?
>
> 73 de W0JT/5
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