B
ButtFuzz
Guest
If the match box is rated to take enough power, then the matchbox (I'm assuming you're essentially talking about an antenna tuner) should be put betwixt the antenna and the linear amplifier. The matchbox essentially changes the electrical length of your antenna such that you tune the antenna circuit close as you can to the frequency on which you operate.
Also, keep an eye on that freq. meter before you transmit. Don't stray too far above or too far below the 'FCC 40' channels, and for God's sake DO NOT xmit above 28MHz, which is start of the 10 meter ham band. You'll attract several followers by doing that, and none of them are good. Think of it this way: My vehicle has a 140 MPH speedometer, but it is not prudent for me to drive that fast. (not that my car could actually approach anything near 140, but that is another story entirely... <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT="
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Regarding the 25.x MHz transmissions: What is probably happening is somehow that electrical state of pin 10 on the MC145106 PLL is being changed from +5v to GND, if I recall correctly. This would cause the radio to go down in frequency 1.28 MHz from where it was currently tuned. There's more to it in this radio than just that, because this radio uses binary adders in addition to the channel selector and the PLL chip. BUT, I bet somwhere in the circuit between the channel selector, the band switch and the PLL itself lies the problem, which may not rear its head again unless the channel switch is intentionally held in a physical position between two channels.
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Buttfuzz in the Mobile</p>
Also, keep an eye on that freq. meter before you transmit. Don't stray too far above or too far below the 'FCC 40' channels, and for God's sake DO NOT xmit above 28MHz, which is start of the 10 meter ham band. You'll attract several followers by doing that, and none of them are good. Think of it this way: My vehicle has a 140 MPH speedometer, but it is not prudent for me to drive that fast. (not that my car could actually approach anything near 140, but that is another story entirely... <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT="
"> Regarding the 25.x MHz transmissions: What is probably happening is somehow that electrical state of pin 10 on the MC145106 PLL is being changed from +5v to GND, if I recall correctly. This would cause the radio to go down in frequency 1.28 MHz from where it was currently tuned. There's more to it in this radio than just that, because this radio uses binary adders in addition to the channel selector and the PLL chip. BUT, I bet somwhere in the circuit between the channel selector, the band switch and the PLL itself lies the problem, which may not rear its head again unless the channel switch is intentionally held in a physical position between two channels.
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Buttfuzz in the Mobile</p>