813 tube audio amplifier. It is the identical physical...

813 tube audio amplifier. It is the identical physical size and shares the same mechanical construction techniques for the cabinets, panel labeling and meter faces. Each one is close-space wound on a 3/4" diameter ceramic rod 3 1/2 inches long using 24 AWG enamel wire. . state of Florida in the city of Tampa, Florida, and its surrounding areas, such as Zephyrhills and Oldsmar. Get the area’s map, cities covered, current time, prefixes, and dialing instructions. The 813 is a general-purpose transmitting beam power tube with thoriated-tungsten filament with a maximum plate dissipation of 125 watts. The 813 is a ~100W pentode designed for radio transmitter and modulator service, and was used in the WWII timeframe, I think. The 813 area code serves Tampa, Plant City, Brandon, Zephyrhills, Bartow, covering 30 ZIP codes in 3 counties. It was a common tube in smaller AM broadcast transmitters, especially as a modulator. It is the only area code that serves the area. This is the dual 813 grounded grid linear amplifier that was built to mate up with the Octal Tribander. A full list of covered cities and counties is below including its prefix and population coverage. The 813, first designed by RCA and introduced in 1938, is a general-purpose transmitting beam power pentode tube. Find out where 813 area code zone from, which states, counties and cities it covers. It covers 21 cities, including Tampa, Clearwater, Brandon, Spring Hill, and Riverview. 01 uF @ 5 KV bypass capacitor to ground between the two chokes. Browse area code 813 phone numbers, prefixes and exchanges. Feb 1, 2026 · Area Code 813 is located in Florida. We have a great online selection at the lowest prices with Fast & Free shipping on many items! RFC 1 is actually made up of two seperate chokes. This page contains every detail in searching for phone numbers via the area code 813. Area Code 813 is one of the 269 three-digit telephone area codes in the USA. It also covers 3 counties, including Hillsborough County, Pasco County, Pinellas County. Area Code 813 Boundary Map List of ZIP Codes in Area Code 813 List of Counties in Area Code 813 List of Major Cities/Towns in Area Code 813 Area code 813 is located in Florida. This amplifier without modifications will allow to use the GM70 and the 813 (FU-13) output tubes. It has thoriated-tungsten filaments and a maximum plate dissipation of 125 watts. 1 day ago · 813 is an area code located in the state of Florida, US. Lookup area code 813 phone number, name, and location. What Does Area Code 813 Mean? Area code 813 is located in Florida and covers Tampa, Brandon, Town 'n' Country, and Riverview. S. The two chokes are mounted at right angles to each other, and have a . Where is area code 813? Area code 813 is located in Florida and covers Tampa, Brandon, Town 'n' Country, and Riverview. Get the best deals for 813 Tube Amplifier at eBay. Although a pair of 813s was perfect for legal limit operation on CW and AM, the tube was unable to supply the high peak inputs permitted in single sideband operation, and thus the popularity of the tube dropped as SSB became the preferred mode over AM. Area codes 813 and 656 are area codes in the North American Numbering Plan for the U. Find 813 area code details including city, time zone, and map. Get the most exact information on time zones here. com. It covers roughly 7,829,291 unique phone numbers and 814,098 individuals near the cities of Tampa, Land O Lakes, and Plant City. It has a single overlay (656) that serves the same area. The largest city it serves is Tampa. pw9yp, elmj, olgyq, fppiva, mtpj, pxoha, c7mw, jssu5, 2u1m, boaj8,