DVアダプターのFT736対応について D-STAR技術情報/ウェブリブログ

DVアダプターのFT736対応について

<< 作成日時： 2007/10/01 21:55 >>

下記URLに検波出力と変調入力の方法が出ています。

http://www.amsat.org/amsat/ftp/mods/ft736mod.txt

該当部分を転載しておきます。（詳細は、上記URLを見てください。）

検波出力について

1. Disconnect FT736 from the mains electricity. (Safety).
2. Remove top cover only.
3. RX Unit is the vertical module on the left.
4. Locate R91 which is about 25mm from the top, 50mm from the radio rear.
the resistor is "on-end", and near a couple of glass diodes.
5. Scrape any paint off R91's free end and wet with solder.
6. Your RXaudio lead should be a fine screened cable; connect the inner
to R91, and the outer braid to a ground point (e.g. can of TO09)
7. Route the cable out though any convenient aperture in the case.
8. Remove C82. It's by the end of CD01, the 455D block.
9. The discriminator sensitivity (FM Normal) as about 6 kHz/volt.

変調入力について

1. Disconnect FT736 from the mains electricity. (Safety).
2. Remove top cover only.
3. TX Unit is the module flat on the left (not the one tucked down the
side vertically).
4. R32 is just to the left of the rectangular shielded enclosure. The
resistor is "on end". Scrape any paint off the free leg.
5. Your TXaudio lead should be a fine screened cable; connect the inner
to R32, and the outer braid to the adjacent enclosure.
6. Route the cable out though any convenient aperture in the case.

7a. 1200 BAUD PSK MODEM: TXAudio of 800 mV pk-pk can be obtained by
adjusting the components C9= 1uf, R3=47k, R5=infinity (i.e. remove).
C10 stays at 10nf (0.01uf).

7b. 9600 BAUD FSK MODEM: Adjust TXAudio level with VR1. Use TXEPROM
selection number 10 (ten) for UoSAT, i.e. JMP1,3 ON, JMP2,4 OFF