Ramsey Electronics PR20 manual 2SC2498 Characteristics

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2SC2498 CHARACTERISTICS:

The 2SC2498 transistor is a bipolar silicon NPN low noise UHF/VHF amplifier in a TO-92 case, suitable for service up to 5GHz, with maximum device dissipation of 600 milliwatts. Other maximum ratings:

Collector -to-Base Voltage:

25

V

Collector-to-Emitter Voltage: 12

V

Base-to-Emitter Voltage:

3

V

Maximum Collector Current: 70 mA

Standard replacements: ECG10 or SK9139. You may, of course, order replacement 2SC2498 transistors from the Ramsey factory in Victor, NY, but we are pleased also to give you this pipeline to your own local electronics parts dealer if 2SC2498 replacements are needed.

PR20—12

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Contents LOW Noise Preamp KIT Introduction to the PR20 LOW Noise Preamplifier Circuit Description Parts Supplied with PR20 KIT Disregard C6 Ramsey PR20 PRE-AMP Parts LayoutPR20 PRE-AMP Assembly Procedure PR20-7 Input and Output Connections Testing and Adjustment PR20 ON-OFF Switching Suggestion Strong Signal OVER-LOADINGSwitching Considerations for Transceiver Operation MHz Active Antenna2SC2498 Characteristics Troubleshooting Guide ConclusionRamsey PR2 the Ultimate Broadband Preamplifier Ramsey Kit Warranty Call or write for our full line catalog