1st edition CT Sensors

[Supplement Four]

Just in case anyone's interested, the 1st edition of Traveller uses different detection ranges than what we see in the 2nd edition.

I don't have the 1st edition CT books, but I do have the Judges Guild Screen, which shows some of the differences in the editions.

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Traveller 1st ed. Detection Ranges
-----------------------------------
In Open Space Range = 500,000 miles
Open Space with target rigged for Silent Running Range = 100,000 miles
From Planetary Orbit Range = 50,000 miles
Planetary Orbit with target silent Range = 10,000 miles</pre>[/QUOTE]The table lists ranges for civilian sensors. For military sensors, multiply ranges by x4.

 

[Supplement Four]

Just in case anyone's interested, the 1st edition of Traveller uses different detection ranges than what we see in the 2nd edition.

I don't have the 1st edition CT books, but I do have the Judges Guild Screen, which shows some of the differences in the editions.

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Traveller 1st ed. Detection Ranges
-----------------------------------
In Open Space Range = 500,000 miles
Open Space with target rigged for Silent Running Range = 100,000 miles
From Planetary Orbit Range = 50,000 miles
Planetary Orbit with target silent Range = 10,000 miles</pre>[/QUOTE]The table lists ranges for civilian sensors. For military sensors, multiply ranges by x4.

 

[BlackBat242]

LBB 2 page 32 gives the following:

"Detection
Ordinary or commercial starships can detect other ships out to a range of about one-half light-second; about 1,500 millimeters. Military and scout starships have detection ranges out to two light-seconds; 6,000 mm or 6 meters.

Ships which are maintaining complete silence cannot be detected at distances greater than half detection range; ships in orbit around a world and also maintaining complete silence cannot be detected at distances greater than one-eighth detection range. Planetary masses and stars will completely conceal a ship from detection.

Tracking: Once a vessel has been detected, it can be tracked by anyone up to three light-seconds (about 9,000 mm, or 9 meters)."


Page 10 gives "each millimeter equals 100 kilometers", so the ranges are as follows:

Detection: military - 600,000 km (300,000 km silent){150,000 km in orbit}[75,000 km silent & in orbit]
commercial: 150,000 km (75,000 km silent){37,500 km in orbit}[18,750 km silent & in orbit]

Tracking: 900,000 km all

 

[BlackBat242]

LBB 2 page 32 gives the following:

"Detection
Ordinary or commercial starships can detect other ships out to a range of about one-half light-second; about 1,500 millimeters. Military and scout starships have detection ranges out to two light-seconds; 6,000 mm or 6 meters.

Ships which are maintaining complete silence cannot be detected at distances greater than half detection range; ships in orbit around a world and also maintaining complete silence cannot be detected at distances greater than one-eighth detection range. Planetary masses and stars will completely conceal a ship from detection.

Tracking: Once a vessel has been detected, it can be tracked by anyone up to three light-seconds (about 9,000 mm, or 9 meters)."


Page 10 gives "each millimeter equals 100 kilometers", so the ranges are as follows:

Detection: military - 600,000 km (300,000 km silent){150,000 km in orbit}[75,000 km silent & in orbit]
commercial: 150,000 km (75,000 km silent){37,500 km in orbit}[18,750 km silent & in orbit]

Tracking: 900,000 km all