I have a Drake T-4XB and the R-4B Can anyone tell me how to get a side tone when on CW with the receiver in ext mute position?
----- Original Message ----- From: [email protected] Date: Monday, February 22, 2010 7:23 am Subject: Drakelist Digest, Vol 20, Issue 31 To: [email protected] > Send Drakelist mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://mailman.zerobeat.net/mailman/listinfo/drakelist > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Drakelist digest..." > > > Today's Topics: > > 1. Re: Drakelist Digest, Vol 20, Issue 30 ([email protected]) > 2. Re: Drakelist Digest, Vol 20, Issue 30 (Garey Barrell) > 3. Re: TR7 power supply board glitch (Jim Shorney) > 4. Re: TR7 power supply board glitch (Nigel Gunn G8IFF/W8IFF) > 5. Re: TR7 power supply board glitch (Jim Shorney) > 6. Re: TR7 power supply board glitch (Craig Roberts) > 7. Re: TR7 power supply board glitch (Jim Shorney) > 8. Re: TR7 power supply board glitch (Craig Roberts) > > > ----------------------------------------------------------------- > ----- > > Message: 1 > Date: Sat, 20 Feb 2010 14:45:11 EST > From: [email protected] > Subject: Re: [Drakelist] Drakelist Digest, Vol 20, Issue 30 > To: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > In the past I have not been able to forward anything to > theDrake web > site. Now that I have changed to a cable network and a new > computer I hope this > gets thru to the Drake site. > > Fred M > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > > > ------------------------------ > > Message: 2 > Date: Sat, 20 Feb 2010 14:53:07 -0500 > From: Garey Barrell > Subject: Re: [Drakelist] Drakelist Digest, Vol 20, Issue 30 > To: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > You are here! > > Welcome..... > > 73, Garey - K4OAH > Glen Allen, VA > > Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs > > > > [email protected] wrote: > > In the past I have not been able to forward anything to > theDrake web > > site. Now that I have changed to a cable network and a new > computer I > > hope this gets thru to the Drake site. > > Fred M > > > > > > ------------------------------ > > Message: 3 > Date: Sat, 20 Feb 2010 14:25:19 -0600 > From: "Jim Shorney" > Subject: Re: [Drakelist] TR7 power supply board glitch > To: "[email protected]" > Message-ID: <[email protected]> > Content-Type: text/plain; charset="iso-8859-1" > > On Sat, 20 Feb 2010 11:13:53 -0500, Craig Roberts wrote: > > >HOWEVER, the power meter is now acting up and no amount of > >re-calibration will help. Forward power readings are fine -- > but keying > >the transmitter in the reflected power postion causes the meter > needle > >to drop below zero. This also happens in the forward power > position when > >the rig's keyed with carrier or mic gain control at minimum. > > Craig, > > The zero reference voltage for the meter comes from the 2nd > IF/Audio board. > This should not change between RX and TX, so you may need to > check the zero > adjust (R1128) as described in section 3-2 (S-Meter adjustment) > of the service > manual. This adjustment, as well as several others in the radio, > rely on proper > setting of the +10V. If the +10V has changed or been adjusted, > you will need to > re-align the S-Meter/ACG adjustments, and probably the fixed passband > adjustments as well. The +10V adjustment is the first adjustment > in the service > manual, and must be accurately set before any further alignment > is preformed. > > Hope this helps. > > 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(dot)exofire(dot)net > http://incolor.inetnebr.com/jshorney > http://www.nebraskaghosts.org > > > > > > ------------------------------ > > Message: 4 > Date: Sat, 20 Feb 2010 20:32:05 +0000 > From: Nigel Gunn G8IFF/W8IFF > Subject: Re: [Drakelist] TR7 power supply board glitch > To: Jim Shorney > Cc: "[email protected]" > Message-ID: <[email protected]> > Content-Type: text/plain; charset=UTF-8; format=flowed > > Check for intermittent preset pots on the 2nd IF board. They're > all shot on mine. > If you replace them, fit multi-turn pots. > > On 20-Feb-10 20:25, Jim Shorney wrote: > > On Sat, 20 Feb 2010 11:13:53 -0500, Craig Roberts wrote: > > > >> HOWEVER, the power meter is now acting up and no amount of > >> re-calibration will help. Forward power readings are fine -- > but keying > >> the transmitter in the reflected power postion causes the > meter needle > >> to drop below zero. This also happens in the forward power > position when > >> the rig's keyed with carrier or mic gain control at minimum. > > > > Craig, > > > > The zero reference voltage for the meter comes from the 2nd > IF/Audio board. > > This should not change between RX and TX, so you may need to > check the zero > > adjust (R1128) as described in section 3-2 (S-Meter > adjustment) of the service > > manual. This adjustment, as well as several others in the > radio, rely on proper > > setting of the +10V. If the +10V has changed or been adjusted, > you will need to > > re-align the S-Meter/ACG adjustments, and probably the fixed > passband> adjustments as well. The +10V adjustment is the first > adjustment in the service > > manual, and must be accurately set before any further > alignment is preformed. > > > > Hope this helps. > > > > 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(dot)exofire(dot)net> > http://incolor.inetnebr.com/jshorney> http://www.nebraskaghosts.org > > > > > > > > _______________________________________________ > > Drakelist mailing list > > [email protected] > > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > > > > > > > > > No virus found in this incoming message. > > Checked by AVG - www.avg.com > > Version: 9.0.733 / Virus Database: 271.1.1/2699 - Release > Date: 02/20/10 07:34:00 > > > > -- > Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. > tel +1 937 825 5032 > Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail [email protected] > www http://www.ngunn.net > Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying > Pigs QRP Club International #385, > Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, > MKARS, ALC, GCARES, XWARN. > > > > > ------------------------------ > > Message: 5 > Date: Sat, 20 Feb 2010 14:52:17 -0600 > From: "Jim Shorney" > Subject: Re: [Drakelist] TR7 power supply board glitch > To: "[email protected]" > Message-ID: <[email protected]> > Content-Type: text/plain; charset="iso-8859-1" > > On Sat, 20 Feb 2010 20:32:05 +0000, Nigel Gunn G8IFF/W8IFF wrote: > > >Check for intermittent preset pots on the 2nd IF board. They're > all shot on mine. > >If you replace them, fit multi-turn pots. > > More likely just in need of a good clean and lube. They have > served well for > 30+ years, but need a little TLC. Multi-turn is a good idea, but > in that > location will make adjustment even trickier than it already is. > > 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(dot)exofire(dot)net > http://incolor.inetnebr.com/jshorney > http://www.nebraskaghosts.org > > > > > > ------------------------------ > > Message: 6 > Date: Sat, 20 Feb 2010 20:39:59 -0500 > From: Craig Roberts > Subject: Re: [Drakelist] TR7 power supply board glitch > To: Jim Shorney > Cc: "[email protected]" > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hmmm. The 10 volt line is dead on (I equipped the power supply > board > with trim pots). The S-meter has been re-calibrated correctly > with no > fuss and the power meter adjustments have been made > successfully. Yet, > the reflected power still indicates below zero when the > transmitter is > keyed -- as if the meter was wired in reverse. > > What about the "null meter" adjustment on the AL:C board? What > does > that do? (Yeah, I know -- it nulls the meter). > > Craig > W3CRR > > > > ------------------------------ > > Message: 7 > Date: Sat, 20 Feb 2010 20:15:34 -0600 > From: "Jim Shorney" > Subject: Re: [Drakelist] TR7 power supply board glitch > To: "[email protected]" > Message-ID: <[email protected]> > Content-Type: text/plain; charset="iso-8859-1" > > > OK Craig, I think you have a diva there. Talk to her gently, in > low, soothing > tones. :) > > Two possibilities come to mind. The plastic meter case may have > acquired a > static charge. Have you cleaned the front plastics recently? > Vigorous rubbing > can excite the electrons too much. This should show as a non- > zero reading with > the radio powered off. > > The other possibility is the mechanical zero of the meter > movement needs > readjusment. Again, does it rest at zero with power off? If so, > that's not your > problem. This adjustment is accessible from the front of the > meter case, which > means you have to dismount it from the front panel. Be aware of > the potential > for static charges while you are doing this, it can throw off > the adjustment > and you will be frustrated again. > > The null adjustment on the watmeter board balances the SWR > bridge so that you > have zero reflected power with a 50 Ohm resistive load. It > shouldn't require > readjustment, but if you have a good, accurate dummy load, it > couldn't hurt. It > wouldn't be the source of your problem, however. > > 73 > > -Jim > > > On Sat, 20 Feb 2010 20:39:59 -0500, Craig Roberts wrote: > > >Hmmm. The 10 volt line is dead on (I equipped the power supply > board > >with trim pots). The S-meter has been re-calibrated correctly > with no > >fuss and the power meter adjustments have been made > successfully. Yet, > >the reflected power still indicates below zero when the > transmitter is > >keyed -- as if the meter was wired in reverse. > > > >What about the "null meter" adjustment on the AL:C board? What > does > >that do? (Yeah, I know -- it nulls the meter). > > > -- > 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(dot)exofire(dot)net > http://incolor.inetnebr.com/jshorney > http://www.nebraskaghosts.org > > > > > > ------------------------------ > > Message: 8 > Date: Sun, 21 Feb 2010 00:38:02 -0500 > From: Craig Roberts > Subject: Re: [Drakelist] TR7 power supply board glitch > To: Jim Shorney > Cc: "[email protected]" > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Right again, Jim! > > It was, indeed, a static charge on the plastic meter case. > > Many thanks and vy 73, my guru. > > Craig > W3CRR > > > > ------------------------------ > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > > End of Drakelist Digest, Vol 20, Issue 31 > ***************************************** >
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