Off Board Parts - ozQRP MST3 Construction And Operation Manual

6 O B
FF OARD
The following is a suggested list of parts required to complete the MST3 transceiver board and
install in an enclosure. These parts are not included in the kit.
This list does not include the VFO, LED S meter or associated parts.
The enclosure listed below is an example and the type used in the prototype; however any
suitable plastic or metal enclosure with the approximate dimensions can be used. When
choosing consider the following:

Metallic rear panel to act as a heatsink for the transmit PA.

Placement of mounting screws to match the PCB mounting holes.

Height of the enclosure to allow clearance for the VFO.

Sufficient space at the front of the enclosure to mount the controls and sockets, VFO and
signal meter clear of the main PCB.
QTY
1 Plastic instrument enclosure. 200mm x 155mm x
65mm with aluminium panels.
1 Red binding post
1 Black binding post
1 Antenna socket.
2 Knobs
1 Momentary action pushbutton switch
1 SPDT toggle switch
2 10K log pot 16mm
1 5mm amber LED and bezel
1 Microphone socket
1 Morse key socket
1 Loudspeaker 8 or 16 ohm
4 PCB mounting screws
1 3mm x 10mm screw and nut
1 TO-220 insulating washer and bush
1 Front panel label
hook-up wire, shielded cable
MST3 Construction and Operation Manual – Issue 1
P
ARTS
Item Comment
www.altronics.com.au
equivalent.
POS power supply.
NEG Power supply.
SO239 or BNC panel mount.
Nominally 20mm diameter.
Tone control switch.
U/L switch.
AF gain and Mic gain.
If the LED S meter is not installed.
To suit microphone. Must have a
separate PTT line.
To suit key plug.
67mm square or equivalent minimum
recommended size.
4g x 6mm self-tapping screws if
mounting into plastic posts.
To mount TX PA.
To mount TX PA.
If required.
H0480F or
Page 26