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The 2.5-millimeter or 122 GHz band is a portion of the EHF radio spectrum internationally allocated to amateur radio use between 122.250 GHz and 123.000 GHz. [1]The band is close to a molecular resonance of oxygen at 120 GHz, which causes significant atmospheric propagation losses, similar to that found at 60 GHz.
Therefore, the Penny Lilac was issued in July 1881 with the inscription Postage and Inland Revenue, superseding the older inland revenue stamps. [1] In 1883–84, a set of stamps known as the Lilac and Green Issue was introduced, and it bore the inscription Postage & Revenue. Later issues of postage stamps up to the 2/6 value also bore this ...
Metric gauge block set, 112 pcs Another set with 8 pcs, 125 mm - 500 mm Trolley model. Gauge blocks (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are a system for producing precision lengths. The individual gauge block is a metal or ceramic block that has been precision ground and lapped to a specific thickness. Gauge ...
The BASIC Stamp is programmed in a variant of the BASIC language, called PBASIC. PBASIC incorporates common microcontroller functions, including PWM, serial communications, I²C and 1-Wire communications, communications with common LCD driver circuits, hobby servo pulse trains, pseudo-sine wave frequencies, and the ability to time an RC circuit which may be used to detect an analog value.
Stamp collecting is commonly known as philately, although strictly the latter term refers to the study of stamps. Another form of collecting regards postcards , a document written on a single robust sheet of paper, usually decorated with photographic pictures or artistic drawings on one of the sides, and short messages on a small part of the ...
The symbols on the lower arc of the stamp indicates the caliber (7.7mm, 5.56mm or 7.62mm) and R# or R#M# indicate the model (R) and mark (M) of the cartridge, like the Commonwealth L#A# stamp (e.g., R1M1 is the first model and second Mark of a cartridge). Later, the 2-digit year is in the 12 o'clock position and a digit in the 6 o'clock ...
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