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CG -
I'm confused. What radio do you have: A standard 148GTL, or a 148GTL-DX (PB-010 board) ?? If its the 010 board, and it has a 2SB817 in the TR51 position, you need to check that TR53 is a 2SA1012 (or equiv), and TR52 is a 2SD471 (or equiv). Then check that R295 is a 47 ohm/1 watt resistor. This is the complete PB-010 modulator upgrade, and doubles the modulator output. If the transistors and the resistor haven't been changed the 2SB817 upgrade is useless. BTW, R295 should be mounted above the board for cooling, and small clip-on heat sinks should be installed on TR52 and 53. Good Luck. 73.

- 399

[QUOTE="unit_399, post: 832597, member: 7311"] CG - I'm confused. What radio do you have: A standard 148GTL, or a 148GTL-DX (PB-010 board) ?? If its the 010 board, and it has a 2SB817 in the TR51 position, you need to check that TR53 is a 2SA1012 (or equiv), and TR52 is a 2SD471 (or equiv). Then check that R295 is a 47 ohm/1 watt resistor. This is the complete PB-010 modulator upgrade, and doubles the modulator output. If the transistors and the resistor haven't been changed the 2SB817 upgrade is useless. BTW, R295 should be mounted above the board for cooling, and small clip-on heat sinks should be installed on TR52 and 53. Good Luck. 73. - 399 [/QUOTE]

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