[Repeater-Builder] TLE1713A
Greetings to the group Just wondering if anyone has a schematic for the TLE1713A PA. I have been trying to fire it up with 1 watt from a Maxtrac but not a thing out of it. Randy Elliott VE3JPU Technical Director South Pickering Amateur Radio Club Inc. Box 53 Pickering, Ontario, Canada L1V 2R2 905-427-6853 ve3...@rac.ca
[Repeater-Builder] TLE1713A Amp
I am putting together a UHF repeater and have a TLE1713A on hand. I need clarification on a few things so that i don't end up with a fried amp when I power it up. What i have gleaned from various sources thus far: 1. Rated for 2 watts input max to give about 75-90 watts out. 2. Designed for 450-470 MHz but works just fine down to about 440. 3. It may be advisable to operate it at reduced voltage. 11-12V rather than 13.8V. 4. If it fails, junk it. Difficult to repair and parts are scarce. What I still am fuzzy on: 1. I am guessing that the left coax viewed with the power TB on the right is the input and the right coax is the output. Correct? 2. The power control is derived from a control voltage on the CTRL pin at the right edge. What is the voltage and current requirements? I get that connecting this up to the operating voltage turns it full on, but it looks like it may be the power for the initial driver stage by the way it is connected internally. Hence the question on the current requirement. I don't have a schematic. So my assumption could be way off. Correct me if I am wrong. 4. The M+ and M- pins. I assume this is for metering? If so, is it for current draw or output power? What type of meter would be appropriate? A generic one with x mA FS to read XX? 5. Explain the rationale for the advantages of operating it at reduced voltage. 6. What is the square connector at the upper right corner used for? 7. What is the total current draw when operating at max output for sizing my supply? Thanks, Michael Dinger W9PXZ
[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
