Version: 13. September 2004
33
Generate a strong signal at 7.030 MHz You may use any RF Generator or the
little Xtal Generator from QRPproject. It is also possible to use a station
transmitter wirh a DummyLoad (Attention, do not connect the Transmitter
directly to the BNC connector, this will damage your Speaky!) Adjust
frequency. Trim C16/C17 to maximum with the weakest possible transmitter
signal. Now you should be able to hear ham operators in the 40 meter band
if you attach an antenna. Be aware, that the Xtal filter is not yet adjusted.
May be it is very small in the moment so you can hear CW stations but not
SSB. To decode SSB Stations you must adjust the filter section as described
later in this manual.
If all is ok, proceed to section 10.
Section 10 SSB Generator and SSB amplifier
[ ] P13 22K Piher PT6 lying A1/2
[ ] P14 50k Piher PT6 lying A1
[ ] P15 220K Piher PT6 lying B1
[ ] P16 2,2K Piher PT6 lying B1
[X] IC17 SSM2165-1 SO8 A1
The following IC may easy be damaged by ESD. Dont forget to
discharge yourself, use a potential free soldering station.
Roll the ICs before mounting! Remember static precautions!
[ ] IC16 NE612 DIL8 A2/3
[ ] IC18 TL071 DIL8 C/D1
The following transistors may easy be damaged by ESD. Dont
forget to discharge yourself, use a potential free soldering
station.
[ ] T23 BF910 MOS beware of static! C3
[ ] T30 BC337-40 B1
[ ] C85 100pF 101 C4
[ ] C86 22nF 223 C3
[ ] C87 22nF 223 C3
[ ] C88 22nF 202 D3
[ ] C89 10nF 103 C3
[ ] C134 47nF 473 A2/3
[ ] C135 10nF 103 A2
[ ] C137 1000pF 103 A2/3
[ ] C138 10nF 103 A2
[ ] C139 0,033µF Film RM 5mm A2
[ ] C149 1nF 103 D1
[ ] C150 1nF 103 D1
[ ] C136 10µF/16V Tantalum pearl A2
[ ] C140 100µF/16V radial A/B1
[ ] C142 1µF/63V radial A1
[ ] C143 22µF/16V radial A1
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