The one you have pictured is one of the newer models made/sold in the last 2 decades by one of the original owners of Sundance. I built the original Silver Streak 150's and 250's at Sundance Electronics in Garden Grove CA back in the late 70's and early 80's. Today I came across the Bunker of Doom website, read with some amusement the posts on C.B Linear Amps. Rebuttals and corrections are always welcome on bunkerofdoom. He would know more about them than I would. I believe it is important and interesting to post this information from the person who originally built the amplifiers. It can barely be seen.Ī note from a gentleman about the TX800 performance and other matters. An attenuator can be used to reduce the RF input to the driver stage. Like most such amplifiers, the driver is capable of severely overdriving the output stage, and care must be exercised to avoid damaging the amplifier in this way. ![]() The name "Eight Hundred", as with most "CB" and "ham" type linear amplifiers, tends to indicate the maximum power input, not the output. The safe operating rating of the amplifier is 400W PEP (or single tone output with appropriate cooling). Class AB biasing is provided for the output stage. The output stage is arranged as a pair of push-pull amplifiers operating through a combiner. "TX Eight Hundred" linear amplifier uses four 2SC2879 output amplifiers and one MRF454 driver. The safe operating rating of the amplifier is 100W PEP (or single tone output with appropriate cooling). The 2-transistor amplifier takes less than 4 watts of drive and would make a good booster for some of the recent low-power backpack HF sets. It was found under the seat of a wrecked car in a junkyard. ![]() This contraption is actually an old Cobra remote-mountable CB strapped underneath a Silver Streak 150 linear amplifier. Although they could be used in amateur radio if a suitable set of low pass filters was installed after the amplifier to reduce harmonics, the vast majority of these clandestinely manufactured amplifiers found themselves connected between a CB radio and an antenna. ![]() These were made on the 1980's and were popular with truck drivers. These were mostly made to deliver the most power for te lowest manufacturing cost consistent with a hopefully long service life if not abused. Most of them just were not made to be as perfect as possible or to comply with spectral purity rules, as most ham radio 'equivalents' are. Transistor Mobile HF Linear Amplifiers Transistor Mobile HF Linear Amplifiers
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