[Drakelist] L-75 cabinet feet
Hi, Does anyone have a source for the original cabinet feet as fitted to an L-75 amp. I have just had one collapse, from what appears to be old age it has attacked the L-7 amps cover!!! If there aren't any out there I'll probably use some generic rubber feet, as it is a slippery plastic probably not glueable. Regards, Kim VK7ZZB ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] TR-7 S meter issue
Hi, maybe someone on the list can help me troubleshoot this. My TR-7 is now working VG+ with with one exception. the S meter reads way high on receive. Wattmeter portion is correctly set per manual, and all other receive alignments are spot on per the manual. I've gone over the S-meter setup 3 times, and same result. An S-9 signal is 30 over, calibrate is about the same, 30 over. I've tried a separate signal generator at 50mv and its 30+ over (elecraft oscillator). Same 50mv signal gen used to check TR4C and its S-8, and TTec Omni VI is same. Any ideas as to where I should look first? Or, are any other alignment settings critical enough as to indirectly cause this problem? Thanks, David Wd9cmd___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Drake MN2000 questions
Hello to the group, First? Does anyone have an MN2000 parts rig ? Oh yes; I still have a spare cabinet for one, will need refinishing, but a great big black cabinet. Second? Did the unit come with an aluminum top side cover when out of the cabinet. The holes are all drilled and tapped, but every picture I can scrounge has no cover. This project is going to be interesting as I have a piece really worked over by someone whom I believe burned a lot of stuff out. 73's and there is always next winter, my wife says boat stuff has to start pretty quick. Carl WD8NHK **A Good Credit Score is 700 or Above. See yours in just 2 easy steps! (http://pr.atwola.com/promoclk/100126575x1218822736x1201267884/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID %3D62%26bcd%3DfebemailfooterNO62) ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Drake MN2000 questions
Carl - Yes, the MN-2000 is completely enclosed. The outer black cabinet is for appearance only. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com gypsym...@aol.com wrote: Hello to the group, First? Does anyone have an MN2000 parts rig ? Oh yes; I still have a spare cabinet for one, will need refinishing, but a great big black cabinet. Second? Did the unit come with an aluminum top side cover when out of the cabinet. The holes are all drilled and tapped, but every picture I can scrounge has no cover. This project is going to be interesting as I have a piece really worked over by someone whom I believe burned a lot of stuff out. 73's and there is always next winter, my wife says boat stuff has to start pretty quick. Carl WD8NHK ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] TR-7 S meter issue
On Thu, 19 Feb 2009 10:45:37 -0500, David Chris Drake wrote: I've gone over the S-meter setup 3 times, and same result. An S-9 signal is 30 over, calibrate is about the same, 30 over. I've tried a separate signal generator at 50mv and its 30+ over (elecraft oscillator). Same 50mv signal gen used to check TR4C and its S-8, and TTec Omni VI is same. I really hope you mean 50 uV, rather than 50 mV. The holy grail seems to be 50 uV for S-9 these days, although I have seen some radios over the years that were spec'd at 100 uV. The results I ended up with seemed to be a combination of circuit changes to the 2nd IF/Audio board and the adjustment method used. I've got my notes partly cleaned up, I'll see if I can finish it up this evening and get it up on the web. I got closer to 50 uV for S-9 than I could when I started... 73 -Jim -- Ham Radio NU0C TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! 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] Drake MN2000 questions
Yes, Carl, the tuner was completely enclosed in an AL box and that slid into the usual Drake black container. It was a beautiful shielding job. They were built like a battleship and some folks modified them to handle other bands. Great coils and great capacitors. The only wear and tear that I see on mine is that the connectors centers are worn thin by so much plug and un plug. (Another little replacement project!) The nice part is the alternative jack for say a dummy load for tuning up the rig. Kris (KA2OIG) Merschrod 123 Warren Road Ithaca, NY 14850 (607) 257-1734 - Original Message - From: gypsym...@aol.com To: Drakelist@zerobeat.net Sent: Thursday, February 19, 2009 4:29 PM Subject: [Drakelist] Drake MN2000 questions Hello to the group, First? Does anyone have an MN2000 parts rig ? Oh yes; I still have a spare cabinet for one, will need refinishing, but a great big black cabinet. Second? Did the unit come with an aluminum top side cover when out of the cabinet. The holes are all drilled and tapped, but every picture I can scrounge has no cover. This project is going to be interesting as I have a piece really worked over by someone whom I believe burned a lot of stuff out. 73's and there is always next winter, my wife says boat stuff has to start pretty quick. Carl WD8NHK -- A Good Credit Score is 700 or Above. See yours in just 2 easy steps! -- ___ 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
[Drakelist] MN2000
Ok all, to those of you who have responded already a thank you. I have to make a cover or .. Wait and see if anyone responds that has a parts unit. Carl WD8NHK **A Good Credit Score is 700 or Above. See yours in just 2 easy steps! (http://pr.atwola.com/promoclk/100126575x1218822736x1201267884/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID %3D62%26bcd%3DfebemailfooterNO62) ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] TR-7 S meter issue
Thanks Jim, Yes, I've miss typed. Sorry if I confused anyone. Those of you that have one of those little handy elecraft generators I'm sure understood. Output is either 1uV or 50uVthere I typed it right! Anyway, I'm gonna study up on the 2nd if-audio board and see if I can figure out anything. Later, David - Original Message - From: Jim Shorney jshor...@inebraska.com To: drakelist@zerobeat.net Sent: Thursday, February 19, 2009 5:11 PM Subject: Re: [Drakelist] TR-7 S meter issue On Thu, 19 Feb 2009 10:45:37 -0500, David Chris Drake wrote: I've gone over the S-meter setup 3 times, and same result. An S-9 signal is 30 over, calibrate is about the same, 30 over. I've tried a separate signal generator at 50mv and its 30+ over (elecraft oscillator). Same 50mv signal gen used to check TR4C and its S-8, and TTec Omni VI is same. I really hope you mean 50 uV, rather than 50 mV. The holy grail seems to be 50 uV for S-9 these days, although I have seen some radios over the years that were spec'd at 100 uV. The results I ended up with seemed to be a combination of circuit changes to the 2nd IF/Audio board and the adjustment method used. I've got my notes partly cleaned up, I'll see if I can finish it up this evening and get it up on the web. I got closer to 50 uV for S-9 than I could when I started... 73 -Jim -- Ham Radio NU0C TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! 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 ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] TR7 Digital control PCB
I recently had a most significant digit error on my TR7. What was happening was that the readout showed 4053, when the actual frequncy should have been 14053, for example, when the bandswitch was set to 20 mtrs. Likewise it showed 11053 when it should have been 21053 on 15 mtrs. The synthesizer was off - it wasn't a readout error. The problem was in the digital control pcb. I had a spare and installing the spare solved the problem. However, I note that there are two versions of the digital control PCB. My original one has a PROM plus a digital divider circuit. The replacement one (older version?) has no PROM but does everything with counter/divider chips. From a quick logic probe check I suspect that the PROM is bad in the original PCB. The technical manual shows both versions. Anyone know of a source of these PROMS for one of these digital control PCBs?? Does the firmware exist? It programs each Amateur Band. Anyone know why the two versions exist? Are there more problems with one? tnx es 73, Doug/WA1TUT ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Fw: Re: MN2000 meter
While we are talking MN2000, I have one with a meter that sticks about half way upscale.Does anyone know where I might get a replacement meter? Thanks, Bill Ellis, WB9CAC --- On Thu, 2/19/09, gypsym...@aol.com gypsym...@aol.com wrote: From: gypsym...@aol.com gypsym...@aol.com Subject: [Drakelist] MN2000 To: Drakelist@zerobeat.net Date: Thursday, February 19, 2009, 3:45 PM Ok all, to those of you who have responded already a thank you. I have to make a cover or .. Wait and see if anyone responds that has a parts unit. Carl WD8NHK A Good Credit Score is 700 or Above. See yours in just 2 easy steps! -Inline Attachment Follows- ___ 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] Fw: Re: MN2000 meter
I think that one of the guys who has drake parts and rigs on Ebay posted some in the last month. Sorry about not being more specific. Kris (KA2OIG) Merschrod 123 Warren Road Ithaca, NY 14850 (607) 257-1734 www.merschrod.net (Site for reviewing the highlights of my book) A Sociology: The dynamics of collectivities and their application to social change and development - Original Message - From: Bill Ellis To: Drakelist Post Sent: Thursday, February 19, 2009 7:28 PM Subject: [Drakelist] Fw: Re: MN2000 meter While we are talking MN2000, I have one with a meter that sticks about half way upscale.Does anyone know where I might get a replacement meter? Thanks, Bill Ellis, WB9CAC --- On Thu, 2/19/09, gypsym...@aol.com gypsym...@aol.com wrote: From: gypsym...@aol.com gypsym...@aol.com Subject: [Drakelist] MN2000 To: Drakelist@zerobeat.net Date: Thursday, February 19, 2009, 3:45 PM Ok all, to those of you who have responded already a thank you. I have to make a cover or .. Wait and see if anyone responds that has a parts unit. Carl WD8NHK -- A Good Credit Score is 700 or Above. See yours in just 2 easy steps! -Inline Attachment Follows- ___ 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 ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] TR-7 S meter issue
On Thu, 19 Feb 2009 17:44:59 -0500, David Chris Drake wrote: Anyway, I'm gonna study up on the 2nd if-audio board and see if I can figure out anything. Here it is: http://radiojim.exofire.net/pages/TR7_2IFA.html I hope this is helpful to you. 73 -Jim -- Ham Radio NU0C TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! 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] TR7 Digital control PCB
On Thu, 19 Feb 2009 15:39:38 -0800 (PST), Douglas wrote: Anyone know of a source of these PROMS for one of these digital control PCBs?? Does the firmware exist? It programs each Amateur Band. Anyone know why the two versions exist? Are there more problems with one? I suspect the PROM version was a cost-cutting measure by Drake. I know that there is someone, can't remember who, offering a replacement for the PROM on the DR7, but I've not seen anyone offering the PROM for the digital control board. It shouldn't be too hard to figure out the programming, though. Personally, anything with a PROM makes me a little nervous, for the reasons you are experiencing. AFAIK, there is no real advantage to the board with the PROM, and the non-PROM board is a little easier to modify to do a PROPER all-band transmit mod. 73 -Jim -- Ham Radio NU0C TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! 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] Fw: Re: MN2000 meter
On Thu, 19 Feb 2009 16:28:15 -0800 (PST), Bill Ellis wrote: While we are talking MN2000, I have one with a meter that sticks about half way upscale. Have you tried to repair the meter movement? 73 -Jim -- Ham Radio NU0C TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! 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
