Amateur Radio DXCluster

M0CKE-6

A modern DXCluster with multiple upstream feeds, validated Reverse Beacon Network spots, callsign confidence checking, per-user filtering and persistent settings.

Server

dxc.m0cke.co.uk

Port

7300

Protocol

Telnet / TCP

Your callsign

Getting connected

1Configure your logging program or telnet client for dxc.m0cke.co.uk:7300.

2When prompted with login:, enter your amateur callsign.

3Type HELP at the cluster prompt for the built-in command summary.

User commands

Command	What it does
DX <freq-kHz> <call> [comment]	Post a local DX spot. Example: DX 14025.0 W1AW CQ
SH/USERS	Show currently connected users.
SH/FILTERS	Show your current DX spot filters.
SET DX OUT ON	Enable incoming DX spot output.
SET DX OUT OFF	Pause incoming DX spot output.
SET DX EXTENSION SKIMMERQUALITY	Show CT1BOH-style RBN quality at the end of skimmer spot comments.
UNSET DX EXTENSION SKIMMERQUALITY	Hide the skimmer quality extension.
ACCEPT/SPOTS ...	Create an allow filter for band, mode, prefix/DXCC, spotter or source.
REJECT/SPOTS ...	Create a reject filter. Reject rules take precedence over accept rules.
CLEAR/SPOTS FILTERS	Remove all your spot filters.
HELP	Display the command summary.
QUIT	Disconnect cleanly from the node.

Filter examples

Bands

ACCEPT/SPOTS BAND 20M,40M

Only pass spots on 20m and 40m.

Modes

REJECT/SPOTS MODE FT8

Reject FT8 spots.

Prefixes

ACCEPT/SPOTS PREFIX G,GM,GD

Only pass matching DX callsign prefixes.

Spotters

REJECT/SPOTS SPOTTER W3LPL-*

Reject a spotter or matching spotter suffixes.

RBN only

ACCEPT/SPOTS SOURCE RBN

Only pass validated skimmer/RBN output.

Human spots only

ACCEPT/SPOTS SOURCE HUMAN

Only pass normal cluster and locally posted spots.

Persistent settings: your DX output setting, skimmer-quality display and filters are saved against your login callsign and restored when you reconnect.

RBN validation

Reverse Beacon Network observations are not simply forwarded raw. The node correlates independent skimmers before publishing a call and uses Super Check Partial and Big CTY as additional confidence signals.

Confidence	Independent skimmers required
SCP known + no CTY objection	2
CTY valid, SCP unknown	3
CTY unavailable, SCP unknown	3
CTY invalid	4 — suspicious, but not automatically rejected

Quality marks follow the familiar CT1BOH/AR-Cluster style: ? unknown, V validated, Q possible QSY and B likely busted decode. The cluster never silently changes a callsign from SCP or CTY data.