Yaesu FT-301D Modification Instructions
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Yaesu FT-301D Modification Instructions

Yaesu FT-301D Modification Instructions

Modification vfo reversal of rotations
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ELcon
Modification VFO
reversal of rotations
Consulting & Engineering
Yaesu FT-301D
Modification instructions
April 10, 2019
Telefon
Brunnhaldenstrasse 8
Fax
3510 Konolfingen
E-Mail
Switzerland
Shop
+41 (0) 31 792 04 61
+41 (0) 31 792 04 62
info@elcon.ch
http://shop.elcon.ch

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Summary of Contents for Yaesu FT-301D

  • Page 1 ELcon Telefon +41 (0) 31 792 04 61 Brunnhaldenstrasse 8 +41 (0) 31 792 04 62 Consulting & Engineering 3510 Konolfingen E-Mail info@elcon.ch Switzerland Shop http://shop.elcon.ch Modification VFO reversal of rotations Yaesu FT-301D Modification instructions April 10, 2019...
  • Page 2 Table of Comments Introduction ............................. 3 Changing the direction of rotation of the variable capacitor ............4 Removing the spreaders in the VFO variable capacitor ............4 Mechanical adjustment of the VFO variable capacitor ............5 Functional test ........................6 Changing the direction of rotation on the CALIB knob ..............
  • Page 3 Normally you are used to turning the VFO knob clockwise increasing the frequency and vice versa. With the FT-301D it is just the other way around and therefore very unusual. This is due to the frequency conditioning of the FT-301.
  • Page 4 The American amateur radio friend David, N0EDS, had the great idea to remove the two spreaders so that the variable capacitor could be rotated freely through 360°. The following description shows how the modification is carried out. 2 Changing the direction of rotation of the variable capacitor 2.1 Removing the spreaders in the VFO variable capacitor ...
  • Page 5 Under no circumstances should the rotor and stator plates touch each other!  Remove the cloth carefully so that no metal chips fall into the device.  Clean the capacitor between the plates with a contact spray so that there are no more aluminum filings inside.
  • Page 6  In this position tighten the grub screw accessible from above.  Turn the tuning knob counterclockwise until you see the second grub screw and can tighten this one too. 2.3 Functional test  Turn on your transceiver. Set the receiver in the 20m band, USB with "Tune" to maximum noise in the speaker.
  • Page 7 4 Disclaimer of liability Any actions based on the information contained in this document are taken at the user's own responsibility. Any liability is excluded, both for direct and indirect damages and consequential damages that may arise in connection with the use of the information contained in this document.

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