TO RECEIVE 0 - 1.5 MHz with or without AUX-7
 Click to enlarge Picture: JM CHERRY |
 Click to enlarge Picture: JM CHERRY |
| ONE DIODE GROUP SHOWN INSTALLED |
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If the TR-7 has not been disconnected from all accessories and the bottom cover removed, do so at this time. Turn the radio upside down with the front panel facing you.
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Refer to the attached photograph and figures and identify connector row 1 on the front right-hand corner of the parent board.
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Carefully label connector pins 1, 2, 3, 16, 17, 18, and 19 in row 1.
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Refer to the attached figures and prepare one group of two diodes and two groups of three diodes. Use 1N4148 or equivalent diodes. Connect the anodes of the diodes in each group together and attach a length of insulated hook-up wire to the common anodes connection of each group.
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Carefully solder the diode groups in position per the attached figures.
Connect the cathodes of the diodes to the indicated foils and the free end of each length of hook-up wire to the indicated connector pin. To avoid shorts, use insulated sleeving as necessary, and dress the leads neatly. Position the TR-7 wiring harness away from areas to be soldered to avoid damage to the harness. -
If your TR-7 has an AUX7 card installed, be sure that positions 1, 2, and 3 are blank.
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Check again for shorts, reinstall the bottom cover and reconnect the TR-7 to the other station components.
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Your TR-7 will now receive 0-500 KHz in AUX position 3, 500-1000 KHz in position 2 and 1000-1500 KHz in position 1.
It is normal for the "SET BAND" lamp to glow in this mode. Use the 1.5MHz bands witch position for 0-1500 KHz reception.