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#Post#: 8--------------------------------------------------
Galaxy DX-959 Clarifier Frequency Counter Realignment
DIR By: kycbradio
Date: October 5, 2018, 3:29 am
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Galaxy DX-959 Clarifier Frequency Counter Realignment
It may be desirable to realign the clarifier position to better
track with the frequency counter. Once the clarifier has been
unlocked it will typically sit "on frequency" at about the 9 or
10 o'clock position. If this is undesirable, it may be reset so
that the clarifier is at 12 o'clock.
1. Set radio to channel 20 (27.205).
2. Set clarifier on radio to 12 O'Clock position.
3. Remove the bias jumper board that connects TP7/TP8/TP9.
4. With the radio in AM receive mode, adjust L20 for reading of
27.205.
5. With the radio in USB receive mode, adjust L21 for reading of
27.205.
6. With the radio in LSB receive mode, adjust L22 for reading of
27.205.
7. With the radio in LSB transmit mode, adjust VR7 for reading
of 27.205.
8. Replace the bias jumper board that connects TP7/TP8/TP9.
*Note:
Adjusting step 6 should automatically adjust the same frequency
in step 7 if the clarifier is unlocked. This won't replace a
complete alignment, but it's pretty close.
A good 6-digit external counter should be used in conjunction
with the above procedure so that the external counter reads
27.2050, and the 959's built-in counter reads 27.205 with the
clarifier at 12 o'clock.
A more precise calibration alignment method has been shown to
work better than the one above (which still works, but this one
is recommended).
1. Set radio to channel 1 (AM mode).
2. Set clarifier on radio to 12 O'Clock position.
3. Connect frequency counter to TP3.
4. With the radio in AM receive mode, adjust L20 for reading of
16.27000MHz ±20Hz.
5. With the radio in USB receive mode, adjust L21 for reading of
16.27250MHz ±20Hz.
6. With the radio in LSB receive mode, adjust L22 for reading of
16.26750MHz ±20Hz.
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