Vertex Standard FT-950 manual Rtty Radio Teletype Operation, Setting Up for Rtty Operation

FT-950

Operating Manual

Note: If you anticipate making data transmissions of longer than a few minutes, we recommend that reduce the transmitter power to 1/3 ~ 1/2 of its normal maximum via the Menu item “111 TGEN TX PWR”.

Quick Point: PACKET Jack Specifications

DATA IN (pin 1)	Nominal Input Level: 50 mVp-p	Impedance: 10 k-Ohms
DATA OUT (Pin 5)	Maximum Output Level: 100 mVp-p	Impedance: 10 k-Ohms

RTTY (Radio Teletype) Operation

Most RTTY operation today is accomplished using a TNC or other computer-based system that utilizes AFSK tones. As such, the previous discussion on LSB-mode “Packet” operation will apply for Baudot operation, as well. For RTTY operation using a Terminal Unit (TU) or the “FSK” output from a TNC, please see the discussion below. See also the illustration for details regarding connection to your TU.

Setting Up for RTTY Operation

Before commencing RTTY operation, please direct your attention to the setup steps shown in the chart to the right.

Menu Item	Available Values
059 RTTY R PLRTY	Nor (normal) / rEU (reverse)
060 RTTY T PLRTY	Nor (normal) / rEU (reverse)
061 RTTY OUT LEL	0 ~ 100
062 RTTY SHIFT	170/200/425/850 Hz
063 RTTY TONE	1275/2125 Hz

Basic Setup

1.Press the [RTTY/PKT] button repeatedly until both the “RTTY” and “LSB” icons will appear on the display; engage RTTY operation using “LSB” injection, which is generally used in the Amateur service.

2.To switch to USB-side injection in RTTY, press the [RTTY/PKT] button once more. Both the “RTTY” and “USB” icons will appear on the display.

3.When you begin typing on your TU or computer keyboard, the command to transmit should automatically be sent to the transceiver, causing it to enter the transmit mode.

Note: If you anticipate making data transmissions of longer than a few minutes, we

107 Vertex Standard Co., Ltd.