|
Here is the schematic for the input attenuator. It is controlled by the logic that switches the bandpass filters.
Date: 06/30/2008
Views: 4037
|
Artic 5 thermal compound, and how I applied it.
Date: 06/30/2008
Views: 2965
|
Caddock MP-930 resistors are mounted with 4-40 screws into the same heat spreaders that the RF amplifiers are mounted to.
Date: 06/30/2008
Views: 7028
|
|
Trial mounting the perf board for the prototype attenuator controller. Relays are JW2SN-12V SPDT; BNC input (70 watts), SMA out
Date: 06/30/2008
Views: 5873
|
The control board, ready to be mounted to the resistors.
Date: 06/30/2008
Views: 9402
|
The back of the control board. Not the neatest job ever - but adequate for a prototype.
Date: 06/30/2008
Views: 6083
|
|
The control board temporarily mounted, checking for hole placement.
Date: 06/30/2008
Views: 26844
|
One view of the completed attenuator.
Date: 06/30/2008
Views: 3318
|
A second view of the completed prototype.
Date: 06/30/2008
Views: 3448
|
