To receive digital TV signals from all stations, it is important that your antenna be able to receive both VHF channels (channels 2-13) and UHF channels (channels 14- 51). Some antennas only provide good reception of VHF or UHF channels, but not both.
Greeting Card Envelope Size: 5.25 x 7.25 Note Card Envelope Size: 4.375 x 5.75. When creating your design file, make the page size equal to the size of the envelope. The text for your return address should not be closer than 5/16 or .3125 from the edge of the envelope. U.S. Mail Layout Guides. Greeting Card Envelope Note Card Envelope.
For most ID cards and credit cards, ID-1 from the ISO/IEC 7810 (Wikipedia) standard gives the dimensions, which are 85.60 Ã 53.98 mm (3.370 Ã 2.125 in) with an aspect ratio of 1.586. This is also the standard business card size in many situations as it is highly pocketable. Another size which could be considered somewhat international, is the ISO 216-sized (Wikipedia) A8 = 74 x 52 mm (2.913 Ã 2.047 in) with an aspect ratio of 1.423.