[FLWSS] Those funny "MAR 6" devices I gave away

[John Logsdon]

Hi All!

My wife and I appreciate you all coming down to visit last Saturday. We had a great day enjoying your company.

The Mar 6 (not quite) devices were characterized by Kent Britain, in the 2004 MUD Proceedings on page 263. For those of you who picked up a few and those who still might want some, here is a summary of Kent's report:

 Unity gain 4 GHz, 8dB at 3 GHz.
50 mHz                                1000 mHz
bias ma    Gain        NF        Gain        NF  (gain,NF in dB)
 10            12.5     2.5        9.9   2.6 
 20            20        2. 0     12.5   2.2
 25            2 0.8    2.0       13.3  2.2
 30            21.3     2.0       13.5  2.2
 35            21.7     2.1       13.8  2.3
 40            22. 0    2.1       13.8  2.3
 50            22.4     2.1       13.9  2.3
 60            22.6     2.3       14.0  2.5
 70            22.7     2.3       13.9  2.5
 80            22.9     2.5       13.8  2.7
 90            22.9     2.5       13.8  2.7
100           23.0     2.7       13.4  2.9

Saturated Power Output (dBm)
current (ma)    50 mHz    1000 mHz   2000 mHz
20                        3                    5                    2
40                        14                12                 4
50                       17                 13                 6
75                        18             12                 8
100                     20              11            5

Kent recommends 20-30 ma idle current for low noise figure and 40-50 ma for power with 60 as a design max. 

I am thinking of using them as down converter mixer followers. 

John the elder   K2STO   BTW I still have a fifty or more. 

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