Current amateur uses Today, the 33 centimeter band is rapidly becoming popular with many UHF enthusiasts. Currently, it is used by amateurs for a variety of purposes. Amateur television Amateur television is a popular activity on the 33 centimeter band, and some manufacturers produced ATV equipment for this band. The first repeater to use the band, the NU6X/R (Amateur TV Network) on 923.25 MHz, was activated and used at the minute the FCC allowed amateur use of the band and featured in QST Magazine. The repeater moved to 919.25 MHz and call changed to W6ATN because AVM part 90 service at 927 MHz began operation as a primary user of the band. CW and single sideband Amateurs who are involved in contesting use home-made or commercially available transverters to operate CW and SSB on the lower end of the band, either just above 903 MHz or just above 902 MHz. SSB/CW operations usually use horizontal polarization for most contacts. VHF/UHF contests are conducted by the ARRL several times each year to encourage operations across all ham bands. Contacts must be made in the simplex mode - that is, without using a repeater. Any mode (FM, SSB, CW) can be used. Contact scoring is higher for 33 cm than the lower bands (6m through 70 cm). FM repeaters Until recently, no amateur radio equipment manufacturer has ever made an FM repeater for the 33 centimeter band. But nevertheless, amateurs have adapted other equipment for use in this band. Amateurs who wish to build a repeater and those who wish to use that repeater must do so using modified commercial equipment designed for use in the mid-800 MHz and mid-900 MHz range. The bulk of modified commercial equipment is manufactured by two companies, Motorola and Kenwood. In 2012, the first two-way 900 MHz radio made specifically for the Amateur Service was introduced by Alinco. The DJ-G29T is a dual band portable radio operating on the 222 MHz and 900 MHz bands and is fully programmable. Building repeaters The ARRL (American Radio Relay League) has specified that repeaters on the 33 centimeter band use a split of -12 MHz with inputs between 906 and 909 MHz and outputs between 918 and 921 MHz. However, the majority of amateur 33 centimeter band amateur repeaters use a split of -25 MHz with inputs between 902 and 903 MHz and outputs between 927 and 928 MHz.