From michael_faircloth at hotmail.com Mon Jul 14 11:19:16 2014 From: michael_faircloth at hotmail.com (Michael Faircloth) Date: Mon, 14 Jul 2014 11:19:16 -0400 Subject: [DSP-10] 8-watt "brickette" Message-ID: What is the maximum input power? I am looking at about 300mW @ 144.390 for APRS. Or it that is too much, how could I still use this device? Thanks! Mike, KM4CQX From kd7ts at comcast.net Mon Jul 14 13:01:24 2014 From: kd7ts at comcast.net (kd7ts) Date: Mon, 14 Jul 2014 10:01:24 -0700 Subject: [DSP-10] 8-watt "brickette" In-Reply-To: References: Message-ID: <53C40CE4.9010302@comcast.net> "What is the maximum input power? I am looking at about 300mW @ 144.390 for APRS. Or it that is too much, how could I still use this device? Thanks! Mike, KM4CQX" HI Mike, If I understand your question, you have 300 mw now from some sort of APRS transmitter and wonder how to use the brickette for increased power. Since this project was designed the amplifiers have become obsolete. The replacement parts are very similar, but slightly different pin spacing and greater power and gain. Rf Parts still shows a listing, and the data sheet can be downloaded here (link follows) http://www.rfparts.com/fileuploader/download/download/?d=0&file=custom%2Fupload%2FFile-1361852136.pdf It says 40 mw (max) for 7 watts output. If my guess concerning your intended use is correct, you could use a 10 db attenuator on the "Brickette" input. Mike KD7TS