For starters, check the resistors in the cathode and plate circuit of the 6C10 Horizontal amp. section. Try a new 6C10. Check the input (2 mfd) and output (.22 mfd) caps for leakage. You might also check the 6BN8 RF Demodulator section and components.
Pete, wa2cwa http://www.manualman.com On Sun, 24 Feb 2008 10:11:07 -0800 (PST) John King <[EMAIL PROTECTED]> writes: > Have replaced bad 3RP1 cathode tube in my HO 10 and > tested all other tubes. Have changed the two > [EMAIL PROTECTED] capacitors. > > It is working however not up to PAR. All controls > work. The current problem is that when in the > trapezoid pattern monitoring AM transmitted signal, > the horizontal width of the trapezoid doesn't > completely fill out to a symetrical point. The > horizontal position and horizontal gain pots work > except that there doesn't seem to be enough horizontal > gain to cause the trapezoid to fully display the full > signal. > > I have a properly working SB 610 that shows clearly my > transmitted AM signal. The HO 10 doesn't fill out the > trapezoid symetrically to a point. > > I suspect a resistor in the horizontal gain circuit > having changed value or maybe a suspect capacitor. Are > there any commonly known culprits that cause this loss > of horizontal gain? Naturally, I am lazy by nature, > and would rather "pick your brains" than use my feeble > brain. What are your thoughts based on your vast > knowledge and EXPERIENCE??? Thanks and 73, John, K5PGW ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
