[Repeater-Builder] TLE1713A-1 at 448 MHz
I do apologize if this has been answered already (I did spend about 20 minutes going through old messages). I just received a very clean TLE1713A-1 amp, and I am intending to use it around 448 MHz for a ham repeater. Of course, I have no documentation on this unit. Applying 13 VDC to the control line, I got a little over 150W out into a 50 ohm dummy load at 448 MHz, and about 80W out at 462 MHz. My question is, do I simply need to regulate the control line voltage to get the output power down where it belongs, or is there some circuit tuning that I should do as well? If the latter, I am in need of a procedure or at least some schematics or service manual. Any help would be greatly appreciated! Thanks for your time. 73 Phil - AD6NH
RE: [Repeater-Builder] TLE1713A-1 at 448 MHz
Phil, The Motorola TLE1713A Power Amplifier is rated at 75 watts continuous duty for 450-470 MHz. It is a component of the MICOR C64RCB station. All of the technical data is in Service Manual 6881025E50. The bad news is that the manual is NLA from Motorola, but the good news is that it has been scanned in full-page format as a PDF document, and will soon be available for download at the RBTIP. You should use this PA with the appropriate power control module, so that the power can be controlled and the PA protected against poor SWR. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of ad6nh Sent: Saturday, January 30, 2010 11:28 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] TLE1713A-1 at 448 MHz I do apologize if this has been answered already (I did spend about 20 minutes going through old messages). I just received a very clean TLE1713A-1 amp, and I am intending to use it around 448 MHz for a ham repeater. Of course, I have no documentation on this unit. Applying 13 VDC to the control line, I got a little over 150W out into a 50 ohm dummy load at 448 MHz, and about 80W out at 462 MHz. My question is, do I simply need to regulate the control line voltage to get the output power down where it belongs, or is there some circuit tuning that I should do as well? If the latter, I am in need of a procedure or at least some schematics or service manual. Any help would be greatly appreciated! Thanks for your time. 73 Phil - AD6NH
RE: [Repeater-Builder] TLE1713A-1 at 448 MHz
Phil, The Motorola TLE1713A Power Amplifier is rated at 75 watts continuous duty for 450-470 MHz. It is a component of the MICOR C64RCB station. All of the technical data is in Service Manual 6881025E50. The bad news is that the manual is NLA from Motorola, but the good news is that it has been scanned in full-page format as a PDF document, and will soon be available for download at the RBTIP. You should use this PA with the appropriate power control module, so that the power can be controlled and the PA protected against poor SWR. 73, Eric Lemmon WB6FLY Also, the antenna network is part of the Micor station chassis. The antenna network includes the power control and protection circuitry Eric mentions, and ALSO includes an isolator and low-pass filter. Used separate from the rest of the Micor station, the PA will have no low-pass filter, nor isolator. The low-pass filter is a must, and the isolator is a good idea at the very least... --- Jeff WN3A
