TXOK

Command

TXOK -- Display / Set "ok to tx" for a port.

Synopsis

TXO[k] <port> [0 - 3]

Description

Displays the current TXOK flag setting for a port, and allows it to be changed. This flag controls whether or not the transmitter is allowed to key up, and whether or not the receiver is enabled.

If two numeric arguments are supplied, the TXOK flag is set to the second argument, otherwise the current setting for the specified port is displayed.

Values are:

	0 = TX disabled, RX enabled
	1 = TX enabled,  RX enabled
	2 = TX disabled, RX disabled
	3 = TX enabled,  RX disabled

State 2 would typically be used to disable all traffic on a port, to time out troublesome connections, or to do tests.

By default, all ports have this flag set to 1 (TX and RX enabled).

Modified settings remain in force until changed or system is restarted.

Example

TXOK 3        - Display current setting for port 3
TXOK 3 0      - Stop port 3 transmissions.

Availability

Requires SYSOP status.

Caveats

It should be obvious, but if you set TXOK=0 for the port you are using to send commands, you will lose control of the node!

Notes

Setting TXOK=0 does not actually disable the transmitter itself, it merely prevents any frames being sent to the TNC, so if the latter has a built-in CWID, it will still key up the TX so send the CWID.