Re: [Drakelist] Drakelist Digest,New Thread
Tune up Drake B Line. Pre tune using spot settings. Fine tune on antenna with about 10 watts. Not all the time but some time when peaking the pre-selector on the receiver the output will drop suddenly or increase suddenly to 40 watts. The output on the Drake MN 2000 watt meter will show a fluctuation on the meter. Moving the meterback and forth a couple of watts from the 10 watt setting. Any ideas? Poor RCA cables? MN 2000 meter circuit? Anyone else ever see this on the output meter. It just drives me nuts to see erratic readings like this on the output meter. I get 260 mills on the transmitter meter so the output seems ok but it just drives me crazy to have this kind of issue with the rig. The rig was gone over a couple of years ago including rebuilding the power supply and some additional tube replacements. about $400.00 worth of repairs and upgrades. It was working at the time but was experiencing another intermittent problem. Anyone else every experience these kinds of problems with their Drake B line ? Thanks 73 de Fred WD8ADG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Drakelist Digest New Thread
Hi Fred, I employ RG-62 coax cable for the injector patch here, but for the other patch cables I simply use whatever it is that might be on hand here...el-cheapo-brand audio patch cables, I suspect, that my brother-in-law had surplus to his needs... ~73~ de Eddy VE3CUI - VE3XZ ** - Original Message - From: fjmel...@aol.com To: drakelist@zerobeat.net Sent: Monday, December 27, 2010 11:13 PM Subject: Re: [Drakelist] Drakelist Digest New Thread Any advise about replacing the existing RCA cables on a pair of Drake B line twins. Can the cables be replaced with a good quality Audio/Video cables? Is the cable length important? Not talking about the injection cable just the other 3 cables. Thanks Fred WD8ADG -- ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Drakelist Digest New Thread
Any advise about replacing the existing RCA cables on a pair of Drake B line twins. Can the cables be replaced with a good quality Audio/Video cables? Is the cable length important? Not talking about the injection cable just the other 3 cables. Thanks Fred WD8ADG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Drakelist Digest New Thread
On Mon, 27 Dec 2010 23:13:41 EST, fjmel...@aol.com wrote: Any advise about replacing the existing RCA cables on a pair of Drake B line twins. Can the cables be replaced with a good quality Audio/Video cables? Is the cable length important? Not talking about the injection cable just the other 3 cables. Lots of advice in the archives: http://www.mail-archive.com/search?q=cablesl=drakelist%40zerobeat.net 73 -Jim -- Ham Radio NU0C Lincoln, Nebraska, U.S.S.A. TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! Give a man a URL, and he will learn for an hour; teach him to Google, and he will learn for a lifetime. HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/ http://radiojim.exofire.net http://incolor.inetnebr.com/jshorney http://www.nebraskaghosts.org ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Drakelist Digest, New thread Best way to reduce drive to amp.
I back off the drive with the RF Tune. This was after a conversation about the same subject I had with Mark WB0IQK Joe KF0XV From: fjmel...@aol.com fjmel...@aol.com To: drakelist@zerobeat.net Sent: Sun, December 12, 2010 11:09:38 PM Subject: Re: [Drakelist] Drakelist Digest, New thread Best way to reduce drive to amp. Using a Drake B line. What is the best way to reduce the drive to the Amp.? Reduce mic. gain or reduce transmitter output of by using the preselector? How do you do it? Thanks 73 de Fred WD8ADG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Drakelist Digest, New thread Best way to reduce drive to amp.
Fred - It depends upon 'how much' reduction you need. If having the LOAD control at minimum (0) and turning the GAIN down to no less than 9 o'clock is still too much power, then you may need additional reduction. The BEST way is to reduce the Screen voltage on the PA, but this is not simple to do unless the VHF mod has been done to the transmitter. Another good way is to apply a negative voltage to the ALC jack on the rear panel, adjusting it for the output power you want. Most amplifiers with ALC will take care of the problem automatically, assuming the ALC output from the linear is sufficient. Detuning the RF TUNE is 'probably' ok, but there is a risk of spurs since the reason for this selectivity is to reduce unwanted mixing products, especially on the higher bands. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line and TR-4/C Service Supplement CDs www.k4oah.com fjmel...@aol.com wrote: /Using a Drake B line. What is the best way to reduce the drive to the Amp.? Reduce mic. gain or reduce transmitter output of by using the preselector?/ // / How do you do it?/ // /Thanks / // /73 de Fred WD8ADG/ ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Drakelist Digest, New thread Best way to reduce drive to amp.
Using a Drake B line. What is the best way to reduce the drive to the Amp.? Reduce mic. gain or reduce transmitter output of by using the preselector? How do you do it? Thanks 73 de Fred WD8ADG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
