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PK-232 MBX Operating Manual - N3UJJ

PK-232 MBX Operating Manual - N3UJJ

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<strong>PK</strong>-<strong>232</strong> OPERATING MANUAL<br />

COMMAND SUMMARY<br />

FRack “In”<br />

Mode: Packet<br />

Parameters:<br />

Default: 5 (5 sec.)<br />

Host: FR<br />

“n” — 1 to 15, specifying FRame ACKnowledgment timeout in 1 second<br />

intervals.<br />

FRACK is the FRame Acknowledgment time in seconds that your <strong>PK</strong>-<strong>232</strong> will wait for<br />

acknowledgment of a sent protocol frame before "retrying" that frame.<br />

After sending a packet requiring acknowledgment, the <strong>PK</strong>-<strong>232</strong> waits for FRACK<br />

seconds before incrementing the retry counter and sending another frame. If the<br />

packet address includes any digipeaters, the time between retries is adjusted to:<br />

Retry interval (in seconds) = "n" x (2 x m + 1)<br />

(where m is the number of intermediate relay stations.)<br />

When a packet is retried, a random wait time is added to any other wait times.<br />

This avoids lockups where two packet stations repeatedly collide with each other.<br />

FREe<br />

Mode: All<br />

Immediate Command<br />

Host: FZ<br />

Typing "FREE" displays the number of usable bytes left in the MailDrop, as in<br />

"FREE 3724." This may be useful to a Host mode application using the MailDrop.<br />

2/93 A-40<br />

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