Ranger_RCI-2950DX_sch.pdf

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1、 This application note describes how to substitute ERF-2030s for the discontinued Mitsubishi 2SC2166 and 2SC1969 RF transis- tors in the RCI-6900F25 and RCI-2950 DX 10 meter transceivers. The supplying of this information in no way holds EKL Components, or any of its members, responsible or liable f

2、or any damage incurred to person or property. This application note, or any other information, provided by EKL Components is to be used at YOUR OWN RISK. Required Parts: 3pc ERF-2030 1pc EN-369DR 2pcs EN-369FN 1pc 470K ohm, 1/4 Watt Resistor 2pcs 33K ohm, 1/4 Watt Resistor 1) Remove Q60, Q61 and Q62

3、. 2) Remove L27, L28 and L31. 3) Remove C223. 4) Install the three ERF-2030s at Q60, Q61 and Q62. Install the ERF-2030s exactly the same way the 2SC2166 and 2SC1969s were installed, using all the SAME HARDWARE. 5) Install the EN-369DR at Q62. Install this part on the solder side of the PCB. IMPORTAN

4、T: Do NOT stress the leads of the EN-369DR by bending them too aggressively. Bend the leads carefully and make sure that they are as short as possible. a) Solder the EN-369DR positive lead (marked +) to the gate pin of the ERF-2030 at Q62. b) Solder the EN-369DR negative lead (unmarked) to the sourc

5、e pin of the ERF-2030 at Q62. 6) Install the EN-369FNs at Q60 and Q61. Install these parts on the solder side of the PCB. IMPORTANT: Do NOT stress the leads of the EN-369FNs by bending them too aggressively. Bend the leads carefully and make sure that they are as short as possible. a) Solder the EN-

6、369FNs positive lead (marked +) to the gate pin of the ERF-2030s at Q60 and Q61. b) Solder the EN-369FNs negative lead (unmarked) to the source pin of the ERF-2030s at Q60 and Q61. 7) Install the 470K ohm resistor from the gate pin of the ERF-2030 at Q62, to the jumper wire located at L36. 8) Instal

7、l a 33K ohm resistor from the gate pin of the ERF-2030 at Q60, to the hole at R275 that is closest to the front of the radio. 9) Install a 33K ohm resistor from the gate pin of the ERF-2030 at Q61, to the hole at R274 that is closest to the front of the radio. Application Note AN-2030-5a ERF-2030 Dr

8、iver & Finals Conversion for RCI-6900F25 and RCI-2950 DX EKL Components application notes are for reference and experimental use only. EKL Components claims no responsibility for the accuracy of this information and is not responsible for any damages that may occur from the use or misuse of this inf

9、ormation. By referencing and/or using this application note, or any other information, provided by EKL Components, the user agrees to NOT hold liable EKL Components, its subsidiaries, or any of its members, for any damages to person or property that may occur from the use or misuse of this informati

10、on. This application note, or any other information, provided by EKL Components is to be used at YOUR OWN RISK. If you do not agree to the above terms, please return the parts and information to the place of purchase. ERF2030 EKL 0525 ERF-2030 Pins: 1. Gate 2. Drain 3. Source 1 2 3 This illustration will help in locating the parts referenced in the application note.