QRP PROJECT Blue Cool Radio, Руководство пользователя

Страница: 18 / 45

Rev: November 20 2006
18
[ ] D4 BB112 F-3
[ ] D5 BB112 F-3
[ ] D6 BB112 E/F-3
[ ] D7 BB112 E/F-4
Attention: Do NOT install C1 and R3 if you plan to install the 80m
Option!
[ ] C1 3,3pF RM 5mm!! (3p3) E/F-3
[ ] R3 1K upright E-3
[ ] C5 47nF (473) E-5
[ ] R1 68K F-3/4
[ ] R2 68K F-3/4
[ ] C2 47nF (473) F-4
[ ] T1 BF244B E-3/4
The potentiomer P1 must be installed at
C/D 3, there is no extra placement
drawing for this.
[ ] P1
10K Pot SMC-10-V C/D-3
Now again two Bobin coils. You remember them, do you? L2 is easy, it has
only a resonate winding, no coupling winding.
[ ] L2 Neosid 7.1 F10b 11 turns between 1 and 2 0,1 CuL E-3/4
L1 again with two windings. 11 turns between Pin 2 and PIN 1 und 2 turns
between PIN 4 and PIN 3
[ ] L1 Neosid 7.1 F10b F-3
Res. Winding 11 turns 0,1 mm
Coupl. Winding 2turns 0,1 mm
Install the coils plus Ferrit Caps plus shield, do not solder the shield yet.
IF you install the 80m Option, put away this manual now and switch
to the 80m Options manual. You will come back if you have installed
the 80m option.
If you have allready built the 80m Option or if you dont want to use
80m, go on here:
Take a piece of RG174 50 Ohm coax
abt 4-7 cm long. Remove about 1cm
of the insulation at both ends .
Solder one side to a BNC jack and the
other end to the points shown in the
drawing.
As usual, check your work to find
shorts or missing solder points. I
understand, that you are hot to hear
the first signals now, but DO THE CHECK FIRST. Use a Magnifier and bright
light.
Done the check??
OK. Connect your headphones and the power supply.
Preselector Pot to left end, Filter Pot right end, Mode switch to AM
switch your BCR on.
Goto Menu
Choose Radio.
If not changed by yourselfe, the DDS by default is set to 6075 kHz, the
Frequency of „Deutsche Welle“ which should be heard all over Europe very
loud. Outside Europe or if you dont like Deutsche Welle, set the DDS to
another frequency of your choice where a strong BC AM station is working.
You should hear this station now in the headphone.
Attach you Voltmeter to R14 and ground and adjust L1 and L2 „coarse „ to
maximum AGC Voltage. Fine tuning will be done later. The peaks will not be
very sharp.
Now switch to CW/SSB and choose 40m by the menue. Use a dipmeter or a
Signal Generator to produce a 40m signal, couple the signal to the BNC Jack
If you dont have a Signal Generator or a dipper, you may do the following
at a real Antenna with a signal of another HAM.