Subject: Returned Transmitters From: Kevan Hashemi Date: Wed, 04 Jul 2007 13:09:10 -0400 To: Matthew Walker CC: Pi-Shan Chang Dear Matthew, I'm testing the transmitters I took from your lab. A3013A, ID 8: Old battery completely dead, 0 V. Removed silicone, cleaned circuit, replaced battery. Analog circuits damaged and drawing excessive current. A3013A, ID 10: You removed most of the silicone. Was transmitting when I took it out of my bag. Working perfectly. It must have dried out. Picks up mains hum and transmits a strong signal. Battery voltage 2.5 V. A3013A, ID 7: You did not use this one. No obvious breaches in coating. Works fine. Battery voltage 2.7 V. A3013D, ID 2/3: You did not use this one. Was transmitting when I took it out of my bag. Obvious breach in coating around battery edge. Works fine. Battery voltag 2.7 V. How is the transmitter #9 you have in salt water? Yours, Kevan -- Kevan Hashemi, President Open Source Instruments Inc. www.opensourceinstruments.com