View source for Forty-9er

The forty-9er is an improved design over the Pixie2. It has two crystals, one for the rx and one for the tx frequency. 

RX power consumption is around 23mA @ 12V

Output power is around 2 to 3 Watts.

[[File:Forty-9er-topview.jpg]]


[[File:Forty-9er pcb top.jpg]]


[[File:Forty-9er pcb bottom.jpg]]



[[File:Forty-9er schematic.jpg|200px|thumb|none|Forty-9er Schematic]]


Description of the original Norcal Forty 9er [[File:49erOrigMnl.pdf]]


The Final Power Amplifier that is shipped with this kit is the NEC D882 NPN Transistor.

datasheet: [[File:NEC-2SD882-datasheet.pdf]]

Apparently, the datasheet lists this part as suitable for a 3W audio amplifier but it has an Ft of 90MHz.

An initial check revealed that the power output was only 600mW so I decided to replace it with a BD139 which has an Ft of 190MHz. It also has the same footprint and pinout so it is a drop-in replacement for the D882.

[[File:BD139.jpg]]


After fitting this transistor the power output was about 1W.