On 29May2020 2302, Thomas Jones-Low wrote: > On 5/28/2020 9:35 PM, Thomas RUX wrote: >> A Radar is Weight in tons x Cr1,000,000 which is again in my opinion >> way to high. > > Referee's Manual p. 68. Table 3: Radars. A 5km (Distant range) TL > 9 radar is 0.001 tons (or 1 kg / 1 liter), so costs Cr1,000 and > requires 1Kw of power. So a hand held unit (the batteries for TL 9 are > amazing). Actually, radar volume is weight x 2, so it's 2L in volume. Also, pay Cr1,500 for an 'all-weather' radar. Being MT, the rules on just what this range means are far from clear - it looks like a skilled (and lucky) character can use a 5km range radar to detect things tens of thousands of kilometres away according to the spaceship combat rules. At TL12 you get 1 hour of duration per kg of battery. At TL15 this becomes 7 hrs. Battery price goes up enormously with TL, faster than storage. Scaling is wierd. > > TNE Fire, Fusion, & Steel p. 50. Radar. A 3 km TL 9 radar is 100 > liters, 200 kg, and cost Cr 100,000. And requires 0.1 Mw of power, and > requires a 0.05 square meter antenna. These are strangely big, even by 1980s standards. Scaling is sort of sane up to 3,000km range. The range given is for short range, and a skilled user can detect objects out eight times this. For larger radars, past TL9 you use EMS system instead because they are actually smaller (though usually heavier) than radars, assuming you can power them (they're power hungry). At TL9 that 0.1 MW radar will need 0.25 m^3 (0.5 tonnes) of batteries per hour. > > According to GURPS Vehicles a 5 km (3 mile) range radar is 1.36 > kg, 1.7 liters, C1,500, and requires 0.75Kw of power. So again a > hand-held unit. Scaling is linear, which is simple but dubious. If using the radar to target something isn't necessary it will be half the size, weight, and price. TL9 means powercells, which are insanely small and light - you need 0.2 pounds of TL9 rechargable powercell per hour for this radar, costing Cr20. -- Rupert Boleyn <xxxxxx@gmail.com>
