Back to Home
R100 Supplementary Information
By Robert W. Meister WA1MIK
This is a collection of supplementary information for the R100 station. I recorded the voltages on my working station when other people were troubleshooting problems with their stations.
R100 Repeater Control Board GLN6815 Integrated Circuits List:
The "Marked" column indicates the part number stamped on the IC. The "Actual" column indicates a substitute that may be commercially available however there may be other ICs that have the same pin-out and functionality. "N/U" means Not Used. The R100 manual has a table of Vcc and Gnd pins on the first page of the control board schematic. Some don't use the standard pins. There is no U813 or U830.
|800||Quad Op-amp||- - N/U - -||- - N/U - -|
|803||Audio Power Amp||LM380||LM380|
|804||Quad Nand Gate||- - N/U - -||- - N/U - -|
|805||Quad Nand Gate||- - N/U - -||- - N/U - -|
|806||Triple 3-Input Nand Gate||- - N/U - -||- - N/U - -|
|807||Quad Nand Gate||- - N/U - -||- - N/U - -|
|808||Quad Nand Gate||- - N/U - -||- - N/U - -|
|809||Quad Or Gate||MC14071||MC14071|
|810||Quad Nand Gate||- - N/U - -||- - N/U - -|
|811||Triple 3-Input And Gate||87K28||CD4073|
|814||Schmitt Hex Inverter||04M21||CD40106|
|815||PLL||- - N/U - -||- - N/U - -|
|816||PLL||- - N/U - -||- - N/U - -|
|817||PLL||- - N/U - -||- - N/U - -|
|818||PLL||- - N/U - -||- - N/U - -|
|819||PLL||- - N/U - -||- - N/U - -|
|820||PLL||- - N/U - -||- - N/U - -|
|821||Quad Analog Switch||MC14016||MC14016|
|822||Quad Analog Switch||MC14016||MC14016|
|823||Quad Analog Switch||MC14016||MC14016|
|825||Quad Nand Gate||MC14011||MC14011|
|826||Quad And Gate||MC14081||MC14081|
|828||Triple 3-Input Or Gate||87K29||CD4075|
|829||Quad Nand Gate||MC14011||MC14011|
|831||Dual J-K Flip-Flop||- - N/U - -||- - N/U - -|
|832||Quad Nor Gate||MC14001||MC14001|
|833||Sync 4-Bit Counter||- - N/U - -||- - N/U - -|
|834||Dual Sw-Cap Filter||- - N/U - -||- - N/U - -|
|835||Dual Sw-Cap Filter||- - N/U - -||- - N/U - -|
|836||Triple 3-Input Nand Gate||- - N/U - -||- - N/U - -|
|837||Quad Op-amp||- - N/U - -||- - N/U - -|
|838||Quad Analog Switch||- - N/U - -||- - N/U - -|
R100 Repeater Control Board GLN6815 Electrolytic Capacitors List:
Some of the parts shown in the schematic and actually installed on the board are not listed in the parts lists.
All capacitors are radial leads unless marked otherwise.
|C#||Value @ Voltage|
|800||100 @ 25|
|805||10 @ 33|
|811||100 @ 25|
|815||100 @ 25|
|816||Axial 1000 @ 16|
|818||4.7 @ 35|
|845||10 @ 33|
|892||10 @ 33|
|894||100 @ 25|
|899||100 @ 25|
|908||2.2 @ 50|
|915||10 @ 33|
|960||220 @ 32|
|961||220 @ 32|
|962||220 @ 32|
Here's the list sorted by quantity and value. Capacitors with the same value but a higher voltage can always be substituted. 35V instead of 25, 32, or 33V is perfectly acceptable. 25 or 35V is fine for the 16V cap, but check the length; new caps are usually a lot smaller than ones made 20 years ago.
|Qty||Value @ Voltage|
|1||2.2 @ 50|
|1||4.7 @ 35|
|1||Axial 1000 @ 16|
|3||220 @ 32|
|4||10 @ 33|
|5 *||100 @ 25|
* Note: Add another 100uF 25V capacitor (C6) if your station has the QLN4314A Interface Board that mounts to the control board.
R100 25W UHF Repeater Battery Reverting Power Supply Regulator Board Voltages:
All voltages measured with a Fluke 189 DMM. The negative lead was attached to the negative terminal on the main power supply filter capacitors. Some of the voltages below may be different depending on what you've adjusted the A+ voltage to. The TX alignment section of the manual calls for 13.2V but the power supply theory section mentions 13.6-14.0V (nominal 13.8V). My supply was set for ~13.2V.
DC voltages on U52, the 14-pin IC, in RX mode.
|1||0.11||High When Battery Voltage Low (Pin 2 < Pin 3)|
|5||8.87||Extremely Close To Pin 7|
|6||8.87||Same As Pin 7|
|7||8.87||Varies With Battery Charge Voltage And R70|
|8||0.11||High When Line Voltage < 50VAC (Pin 9 < Pin 10) (Activates Relay)|
|14||0.03||High When PS Voltage Too High (Pin 12 > Pin 13) (Activates Relay)|
The station draws about 0.5A in RX mode from the external battery terminals with no AC connected.
DC voltages on 1/4 inch quick disconnect terminals, in RX and TX modes.
|J10||13.236||12.93||Regulated 13.2VDC From Series-Pass Transistors|
|J11A||13.223||12.92||Regulated 13.2VDC To PA|
|J12||13.196||13.23||External DC (Battery) Input|
DC voltages on J2 that goes to the station's Tone Remote Control (TRC) board, in RX mode.
|2||KEYWAY||- - -|
|3||GREEN||0.0||High When On Battery (Pulled High On TRC)|
|4||YELLOW||6.0||Low When Low Battery (Pulled High On TRC)|
DC voltages on J1 that goes to the series-pass transistors, in RX mode.
|2||KEYWAY||- - -|
|5||BLACK||24.8||Unregulated DC Voltage Input|
|6||WHITE||13.8||Drive To Series-Pass Transistors|
The green LED is lit when AC power is providing DC voltage to the regulator board. The red LED is lit when the relay is energized and external DC power is being used to provide DC voltage to the station.
If the relay actuates when AC power is present (both LEDs lit at the same time) and no external DC is available, U51 at the bottom of the board will get very hot as it tries to supply all the power to the station.
I measured the power supply voltage at the terminal feeding the RF Power Amplifier with varying amounts of load provided by an electronic dynamic load. I unplugged the 7-pin Molex connector at the repeater control board. Here are the results.
The supply went into current fold-back at 18A and provided 3.5A to the load at 0.9V. Once the load was removed, the supply recovered to 13.18V. The supply is rated for about 10-12 amps.
R100 25W UHF Repeater non-Battery Reverting Power Supply Regulator Board Voltages:
All voltages measured with a Fluke 189 DMM. The negative lead was attached to the chassis. Some of the voltages below may be different depending on what you've adjusted the A+ voltage to. The TX alignment section of the manual calls for 13.2V but the power supply theory section mentions 13.6-14.0V (nominal 13.8V). My supply was set for 13.68V and the line voltage was 119VAC. This power supply has horrible line regulation, meaning that if the AC line voltage varies, so does the DC output voltage. The DC output voltage dropped by 0.6 VDC for a 30 VAC input change.
These are the voltages on the six-pin connector on the regulator board, no input signal, station in standby, RPTR DIS and PL DIS switches activated.
|1||No pin/wire||- - -||- - -|
|4||No pin/wire||- - -||- - -|
I also measured the load regulation: the output voltage dropped by 0.7 VDC with a 10A load applied.
R100 Repeater Control Board GLN6815A Connector Voltages:
This is with the station running on AC power, RPTR DISABLED, nothing else attached. This is the least-populated board without the tone remote components and no other board, connector, or cables are plugged into it.
P5 - RPTR TX: Pins 1, 2, and 3 are used for programming. Pins 4, 5, and 6 also go to P4 pins 4, 6, and 8 respectively.
|3||8.71||Exciter Audio/Data Out|
P4 - BASE/RPTR RX: Pins 2, 4, and 7 are for programming. Pins 4, 6, and 8 also go to P5 pins 4, 5, and 6 respectively.
|1||- - -||N/C|
|3||4.92||Detected Audio Out|
|5||4.91||Rx Flat Audio|
|9||- - -||N/C|
|12||- - -||N/C|
|14||- - -||N/C|
|15||- - -||N/C|
P7: DC Power input from power supply.
|1||- - -||N/C|
|2||- - -||N/C|
|3||- - -||N/C|
DC voltages on Q809 (the 9.6V regulator, the medium-sized power transistor standing vertical in the lower right quadrant of the RCB).
R100 Repeater Control Board GLN6815 Test Points:
Pg # is the schematic page number in the manual.
Some test points are not present on the circuit board X-ray view or the schematic.
The author can be contacted at: his-callsign [ at ] comcast [ dot ] net.
Back to the top of the page
Up one level (R100 index)
Up two levels (Motorola index)
Back to Home
This page created on Fri 06-Nov-2013
Article text, artistic layout, and hand-coded HTML © Copyright 2013 by Robert W. Meister WA1MIK.
This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors. All Rights Reserved, including that of paper and web publication elsewhere.