Check the listing for details. Motorola/TRW CA2812 1-520 MHz Broadband Amplifier Assembly. Condition: For parts or not working. Listed at 35.00 USD. CA2812 WIDEBAND HF, VHF, UHF 300mW AMPLIFIER 1 MHZ - 520MHZ ASSEMBLY This amplifier is presumed to be manufactured by Motorola (???), but there is no indication on the assembly. The semiconductor device itself carries a TRW label. Note that a picture of this same assembly has been found on a Bing search of the internet. It definitely has been manufactured and not home-brewed. It is operated by a 12 VDC source. Please note that you must see description, photos, and condition statements. Item is as presented in these. It has NOT been tested, so it is sold "AS-IS" and "AS-DESCRIBED". And because this is a semiconductor device (over which I have no control over how it was connected, handled, installed, or used), there can be no returns unless it is found to deviate from the information found herein. Should a valid concern rise, please contact me directly through the eBay messaging system before filing a complaint with eBay. Issues are best and most easily handled directly rather than enlisting the most often confusing and aggravating "help" of eBay.