MP20 - Lesson #1 - Getting started!
Starters and Suggestions:
Make sure you have the following equipment...
A 20 MHz oscilloscope or better.
Scope is needed to align the BFO
transmit and receive frequencies. I may be able to devise a scheme
using a diode detector with a Fet input VOM.
PCB FLUSH wire cutters.
Slot type alignment tool; used to adjust
variable caps. A small
jewelers screwdriver will do also.
A good solder station - Weller model WTCPS with a PTP-7 tip recommended
60-40 rosin core solder - radio shack solder is fine.
Wet sponge to clean the solder tip
Hook-up wire. Get some Black and
Red 18 gauge wire for power
and some 30 gauge wire-wrap wire for interconnect wires.
18 gauge tinned bare wire from Radio Shack
1/16 th inch thick double sided foam
sticky tape; used to secure
all toroids and some other components.
The following copper board sizes are
required to build the MP20 Mounting base for the MP20 boards. You need to decide
how you want to build the MP20. My first multiPIG was built on a phenolic
board. All copper boards were stuck onto the board with double stick tape.
1. 3.5 x 4.0 - Freq Counter
2. 6.0 x 2.0 - Keyer & TR Switch
3. 6.0 x 6.0 - PLL circuit
4. 2.5 x 2.0 - Noise Blanker
5. 7.0 x 4.0 - Main module (Audio, Mixers, IF etc...)
6. 2.8 x 6.0 - 20 Meter Transmitter module
7. 3.0 x 1.0 - crystal filter module
8. 2.5 x 2.0 - SWR pickup unit
If you are new to building "ugly style", you may want to add 20 pct.
to the above size boards. Sizes are in inches.
And last, Patience, Endurance, Perseverance and Intestinal Fortitude.