官方说明如下：
Connectors:
On the right-hand side of the transceiver on the UI board are four 3.5mm three-conductor connectors.Starting from the top, these connectors are:
• Line Out (J1).
This is a receive audio output that is fixed level (unaffected by the volumecontrol) that may be used to supply audio to a computer for “sound card” (digital) modes. Thisconnector also carries the audio being transmitted.
• Line In (J2).
This input may come from a computer for “sound card” (digital) for transmitting.Its use must be selected in the menu for it to be used.
• Microphone/PTT (J3).
This connector has both a microphone connector with bias voltage (ifR68 is installed) for powering an electret microphone and a PTT (Push-to-Talk) line that isshorted to ground to key the radio. While the PTT line is always active, the microphone mustbe selected as the active audio input from the menu for it to be used. (Note that this is also the“Dah” line, which is also used for keying in CW “straight key” mode.)
• Speaker/Phones (J4).
This jack feeds and external speaker/headphones, disconnecting theinternal speaker when something is plugged into it.• Warning: There is no limiting resistor in series with this audio connection, so you mustremember to turn down the volume before plugging in headphones.
On the RF board, along the right side, there are three connectors. Starting from the top theseconnectors are:
• Power connector (J1).
This is a coaxial power connector, 5.5mm O.D., 2.1mm I.D., thatsupplies power to the transceiver. The outer shell is negative and the inner conductor ispositive.
• Paddle (J2).
This connects to either a set of Morse paddles or a straight key. The outerconductor (“ring”) is typically the “Dah” while the tip is the “Dit” when in Iambic mode. In“Straight Key” mode only the outer conductor (“ring”) is used. (The “Dah” line is the same asthe “PTT” line.)
• Accessory (J3). This is used for interfacing with an external device and may be used forkeying the transmitter and/or determining when the transmitter is keyed. The “tip” of this jackis the “PTT”/”Dah” line and may be used when interfacing the transceiver to a computer whenoperating a digital mode. The outer conductor (“ring”) is grounded when the transceiver is intransmit mode and this may be used to key an external amplifier or TR switch.主要研究的应该是rf板上的acc口
[ 此帖被bi4wth在2017-12-16 00:56重新编辑 ]
