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ASV Mark II Surface Search Radar
| Wavelength | 170 cm |
| Pulse Width | 2.5 microsecond |
| Pulse Repetition Frequency
|
400 Hz |
| Power | 7 kW |
| Range | 20 miles (30 km) for destroyer 60 miles (100 km) for coastline Minimum range 1 mile (1.6 km) |
| Production |
Several thousand from late 1940
on |
ASV Mark III (H2S Mark I) Surface Search
Radar
| Wavelength | 10 cm |
| Pulse Width | 1.0 microsecond |
| Pulse Repetition Frequency
|
750 Hz |
| Power | 50 kW |
| Range | 100 miles (160 km) |
| Scope |
B scope |
| Production | The very similar DMS-1000 was
installed on B-24 Liberators
from March 1942. The British model was available operationally from early 1943 |
ASV (Air to Surface Vessel) designated a family of airborne radars
developed by the Allies
during the Second World War. ASV Mark II was the first true production
airborne radar and first came into operational use in late 1940. It was
used in a large number of British aircraft types, including the Sunderland, Wellington, Beaufort, and Lend-Lease Hudson and Liberator. Mark III was a
centimetric radar using scarce magnetrons, and there was considerable
wrangling over the available equipment between RAF Coastal Command and
Bomber Command. The very similar American DMS-1000 was installed on
Liberators from March 1942 on.
References
Friedman
(1981)
Guerlac (1987)
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