Version: 13. September 2004
27
careful not to put it in at a wrong angle. Solder the coil i place and put on
the covering core. The can should be mounted loosely, not yet soldered.
[ ] L1 Neosid filter 7.1 F2 C/D7
(17 turns primary / 8 turns secondary)
Now we will continue with the Band modules slots.
The connector strips should be carefully mounted at a right angle to the pc
board. Good practice is to start soldering on lead at the middle of the strip,
an check and adjust for proper position, before soldering the rest.
[ ] Connector strip 5A E7
[ ] Connector strip 5B E5
[ ] Connector strip 4A E7
[ ] Connector strip 4B E5
[ ] Connector strip 3A F7
[ ] Connector strip 3B F5
[ ] Connector strip 2A G7
[ ] Connector strip 2B G5
[ ] Connector strip 1A H7
[ ] Connector strip 1B H5
Now the corresponding pins for the band switching:
[ ] pin 5 E7
[ ] pin 4 E7
[ ] pin 3 F7
[ ] pin 2 G7
[ ] pin 1 H7
Now for the only fixed bridge on the pc board. This should be made from
isolated wire in square E4/E5, and soldered in.
This section cannot be tested yet, as the band set oscillator and the VCO of
the band modules are needed. Put the main pc board aside, and finish one
band module. We recommend the 40 meter module.
If the bandmodule PCB still has pieces of PCB material left and right, cut of
this parts by breaking them along the lines.
Band module 40 Meter
[ ] P1 250R Piher PT6 lying
[ ] C1 220pF
[ ] C2 150pF
[ ] C3 left out
[ ] C5 22nF 223
[ ] C6 10nF 103
[ ] C7 22nF 223
[ ] C8 22nF 223
[ ] C9 47pF 473
[ ] C10 220pF n22 or 221
[ ] C12 10nF 103
[ ] C15 10nF 103
[ ] C16 10pF 10p
[ ] C17 10pF 10p
[ ] C18 22nF 223
[ ] C19 22nF 223
[ ] C20 27pF 27p
[ ] C21 10nF 103
[ ] R1 68K
[ ] R2 27K
[ ] R3 1K
[ ] R4 10R
[ ] R5 56K
[ ] R6 68R
The next resistor has to be adjusted. Criteria is the oscillation of the VCO.
R7 should be as small as possible but if it is to small, the VCO oscillation
will become instable. Start with an 1k in this position. If the VCO does not
start oscillation durin test, try 2k7 or 3k3. Both values are added to the
kit´s bandmodule pack.
[ ] R7 1K or 2k7 or 3k3, see text
[ ] R8 150K
[ ] R9 100K
[ ] R10 68K
To Next Page
Loading...