Re: [drakelist] Drake W-4 vs Drake WV-4 Wattmeters
Bill, The W4 is HF only, and the WV4 is the VHF version. Both same size and appearance. 73, Don, WB5HAK
Re: [drakelist] Drake W-4 vs Drake WV-4 Wattmeters
john [EMAIL PROTECTED] made an utterance to the drakelist gang -- The V is the VHF model John K5MO At 10:40 AM 7/20/2008, you wrote: Hello, I have a Drake W-4 wattmeter. I just saw someone with a WV-4 wattmeter. Can someone please tell me the difference between the W-4 and WV-4 wattmeters? Thanks! 73 Bill K9BUB -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Drake W-4 vs Drake WV-4 Wattmeters
Jim Gerke [EMAIL PROTECTED] made an utterance to the drakelist gang -- The W-4 covers HF and 6m, not just HF. The WV-4 covers 20MHz thru 200 MHz, not just VHF. Also, the power ratings are different. 2KW for the W-4 and 1KW for the WV-4. 73, Jim K5JG Don Cunningham wrote: Bill, The W4 is HF only, and the WV4 is the VHF version. Both same size and appearance. 73, Don, WB5HAK -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Drake W-4 vs Drake WV-4 Wattmeters
Don Cunningham [EMAIL PROTECTED] made an utterance to the drakelist gang -- My apologies to the group for my totally incorrect posting on the W4 controversy. Back to my policy of replying only to the originator, so this dastardly deed doesn't repeat itself. I simply forgot that this list replies to all. Won't happen again. - Original Message - From: Jim Gerke [EMAIL PROTECTED] To: drakelist@zerobeat.net Sent: Sunday, July 20, 2008 9:53 AM Subject: Re: [drakelist] Drake W-4 vs Drake WV-4 Wattmeters Jim Gerke [EMAIL PROTECTED] made an utterance to the drakelist gang -- The W-4 covers HF and 6m, not just HF. The WV-4 covers 20MHz thru 200 MHz, not just VHF. Also, the power ratings are different. 2KW for the W-4 and 1KW for the WV-4. 73, Jim K5JG Don Cunningham wrote: Bill, The W4 is HF only, and the WV4 is the VHF version. Both same size and appearance. 73, Don, WB5HAK -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net -- No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.5.2/1562 - Release Date: 7/19/2008 2:01 PM No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.5.2/1562 - Release Date: 7/19/2008 2:01 PM -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
[drakelist] Test message
Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- TEST -- 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Drake W-4 vs Drake WV-4 Wattmeters
The WV-4 is the VHF version.
[drakelist] Once Again.....
Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Once again, I seem to be having trouble getting to this list... I don't know what it is, apparently everyone else can get through within a couple of minutes. I have been getting Delivery Delayed 24 hours messages from time to time, but the message(s) often go through anyway. I sent a reply to a message almost an hour ago, and still no reflect! I resent the message from several different email addresses and at least two different ISPs, still nothing. However I sent a simple Test message, and it went through in 3 minutes! So either Thom has gotten tired of me, (like so many others, :-),) or some filter somewhere along the way doesn't like the way I compose my messages. Interestingly, this is the ONLY list where I have this problem, it has never happened on any of the other 20 some lists I post to. Just to add to the confusion, it seems to happen just sometimes, while other times things just go through. The last period was probably two months ago. Anybody else seeing this? Let's see if this one goes through!! -- 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] TR7 oscillation
Jim Shorney [EMAIL PROTECTED] made an utterance to the drakelist gang -- On Fri, 11 Jul 2008 23:13:07 -0500, Jim Shorney wrote: You may recall from our previous episode, I was experiencing instability in the 7-10 MHz band of my TR7 when operating at or near full power levels (140-150 watts) with the upgraded transistors. The instability seemed to be related to the setting of the predriver gain pot, so I was guessing that the predriver board was breaking into oscillation. I have been unable to confirm this. I'm wondering if anyone has been down this road before or has any suggestions? The silence is deafening. So, diving in to the problem with wild abandon and a hot soldering iron Googleing the problem turned up two or three references to notes from other hams in various forums that were experiencing the 40 meter oscillation problem. The only fix that was offered was to turn down the power level, along with speculation regarding the PIN diodes as the source of all evil. This was not satisfactory. I also found references to the power output of a properly working TR7 being 140-150 watts on 80/40 meters, gradually decreasing to a little over 100 watts on 10 meters. From my experiments, it seems that the PA deck is easily capable of this, especially with the upgraded transistors. Looking at the schematic of the (version 2) predriver board, it looks like the R2203-RFC2202-C2204 network from collector to base of buffer Q2201 is designed to flatten the gain of the predriver board across the HF range by providing increasing negative feedback as frequency is decreased. I added a 1K resistor across R2203, which should reduce the net resistance to 338 Ohms. This did decrease the gain somewhat, and I am now able to adjust the ALC for 150 watts CW output on 40 meters at the point where the ALC LED *just* comes on. There is no longer any apparent instability or oscillation on 40 meters at this point. Power on 10 meters is now 105 wattts at 28.3, decreasing to 95 watts at 29.8, with ALC action across the entire band. The predriver gain pot was adjusted at 29.8 MHz, as I previously described. This provides plenty of ALC at 28.3, and just enough at the high end of 10 meters. So far, the PA has been rock stable on all bands after this modification. As the manual states, for proper operation under normal operating conditions the carrier level should not be set beyond the point where the ALC LED just comes on. Observing the output on a scope, power does not increase but the carrier does start to garbage up beyond this point. Better yet, back it off so the ALC light just goes out. On SSB, I like to stay out of ALC as much as possible for the reasons cited here: http://www.nitehawk.com/sm5bsz/dynrange/alc.htm So in a nutshell, to cure a TR7 that oscillates at full power on 40 Meters, try this: 1. Decrease the value of R2203, either by adding a 1K in parallel or replacing it with a 330 Ohm resistor, and readjust ALC and predriver pots per service manual spec. 2. If output on 10/15 meters is still low, try the PA board grounding improvements described by DL7MAJ at http://www.dl7maj.de/TR- 7.html. This MAY NOT work for all cases - this is what worked for me, it may not work for you. YMMV. Standard disclaimers apply. It's your responsibility if you let the smoke out. In stereo, where available. Contains no trans-fat. Note: I do not believe this problem to be a reflection on the upgraded transistors suggested by K8AC, VE3EFJ, and others. Rather, the notes I found seemed to indicate that it can happen in a completely stock TR7, and it seems likely that it is related to component and build variations in individual radios. The work these gentlemen have done is excellent, and I humbly thank them once again. Now, to see what other havoc I can wreak in my poor TR7 while the covers are off... 73 -Jim NU0C -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Once Again.....
Doug Smith [EMAIL PROTECTED] made an utterance to the drakelist gang -- Hi Garey, You're coming through loud and clear out here in Montana.. Your message was received here 4 minutes and 38 seconds after it was sent. 73, -Doug, W7KF Garey Barrell wrote: Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Once again, I seem to be having trouble getting to this list... ...SNIPPAGE... Anybody else seeing this? Let's see if this one goes through!! -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] TR7 oscillation
Nice work Jim; this one is going into the Drake List Items by E-mail folder ! 73 de W4DL Mike ex AK7P * WA9SWF * WN9SWF
[drakelist] TR7 PTO Frequency Stability
John Stringer [EMAIL PROTECTED] made an utterance to the drakelist gang -- I read somewhere that a board is available to improve PTO stability. Please tell me where I can find it! John. GI3KDR -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
RE: [drakelist] Once Again.....
John Stringer [EMAIL PROTECTED] made an utterance to the drakelist gang -- Garey. Also fine here in very rural Ireland! John GI3KDR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Doug Smith Sent: 20 July 2008 18:19 To: drakelist@zerobeat.net Subject: Re: [drakelist] Once Again. Doug Smith [EMAIL PROTECTED] made an utterance to the drakelist gang -- Hi Garey, You're coming through loud and clear out here in Montana.. Your message was received here 4 minutes and 38 seconds after it was sent. 73, -Doug, W7KF Garey Barrell wrote: Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Once again, I seem to be having trouble getting to this list... ...SNIPPAGE... Anybody else seeing this? Let's see if this one goes through!! -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net -- -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] TR7 oscillation
K8AC - k8ac [EMAIL PROTECTED] made an utterance to the drakelist gang -- Jim - Just received this message via email and it appears to have come from the drakelist at zerobeat.net site, but when I go there, your message is not in the forum there. Maybe you can tell me the exact URL of the site where you posted it? My TR7 with the rebuilt PA ran just fine for quite a while, until I erected a new 40 meter vertical. The first time I used that antenna with the TR7 on 40, the final oscillated. Switching back to a dipole antenna - no oscillation. Really odd, since there is virtually no reactance seen on either feedline and the antennas are a ways from the rig. Anyway, dialing back the gain pot in the pre-driver eliminated the oscillation but of course reduced my output on 10 meters again. I'll have to try your change and see if that changes things. 73, Floyd - K8AC - Original Message - From: Jim Shorney [EMAIL PROTECTED] To: drakelist@zerobeat.net Sent: Sunday, July 20, 2008 12:40 PM Subject: Re: [drakelist] TR7 oscillation Jim Shorney [EMAIL PROTECTED] made an utterance to the drakelist gang -- On Fri, 11 Jul 2008 23:13:07 -0500, Jim Shorney wrote: You may recall from our previous episode, I was experiencing instability in the 7-10 MHz band of my TR7 when operating at or near full power levels (140-150 watts) with the upgraded transistors. The instability seemed to be related to the setting of the predriver gain pot, so I was guessing that the predriver board was breaking into oscillation. I have been unable to confirm this. I'm wondering if anyone has been down this road before or has any suggestions? The silence is deafening. So, diving in to the problem with wild abandon and a hot soldering iron Googleing the problem turned up two or three references to notes from other hams in various forums that were experiencing the 40 meter oscillation problem. The only fix that was offered was to turn down the power level, along with speculation regarding the PIN diodes as the source of all evil. This was not satisfactory. I also found references to the power output of a properly working TR7 being 140-150 watts on 80/40 meters, gradually decreasing to a little over 100 watts on 10 meters. From my experiments, it seems that the PA deck is easily capable of this, especially with the upgraded transistors. Looking at the schematic of the (version 2) predriver board, it looks like the R2203-RFC2202-C2204 network from collector to base of buffer Q2201 is designed to flatten the gain of the predriver board across the HF range by providing increasing negative feedback as frequency is decreased. I added a 1K resistor across R2203, which should reduce the net resistance to 338 Ohms. This did decrease the gain somewhat, and I am now able to adjust the ALC for 150 watts CW output on 40 meters at the point where the ALC LED *just* comes on. There is no longer any apparent instability or oscillation on 40 meters at this point. Power on 10 meters is now 105 wattts at 28.3, decreasing to 95 watts at 29.8, with ALC action across the entire band. The predriver gain pot was adjusted at 29.8 MHz, as I previously described. This provides plenty of ALC at 28.3, and just enough at the high end of 10 meters. So far, the PA has been rock stable on all bands after this modification. As the manual states, for proper operation under normal operating conditions the carrier level should not be set beyond the point where the ALC LED just comes on. Observing the output on a scope, power does not increase but the carrier does start to garbage up beyond this point. Better yet, back it off so the ALC light just goes out. On SSB, I like to stay out of ALC as much as possible for the reasons cited here: http://www.nitehawk.com/sm5bsz/dynrange/alc.htm So in a nutshell, to cure a TR7 that oscillates at full power on 40 Meters, try this: 1. Decrease the value of R2203, either by adding a 1K in parallel or replacing it with a 330 Ohm resistor, and readjust ALC and predriver pots per service manual spec. 2. If output on 10/15 meters is still low, try the PA board grounding improvements described by DL7MAJ at http://www.dl7maj.de/TR- 7.html. This MAY NOT work for all cases - this is what worked for me, it may not work for you. YMMV. Standard disclaimers apply. It's your responsibility if you let the smoke out. In stereo, where available. Contains no trans-fat. Note: I do not believe this problem to be a reflection on the upgraded transistors suggested by K8AC, VE3EFJ, and others. Rather, the notes I found seemed to indicate that it can happen in a completely stock TR7, and it seems likely that it is related to component and build variations in individual radios. The work these gentlemen have done is excellent, and I humbly thank them
[drakelist] El-Cheapo (and El-SIMPLO!) CW Filter
Hi All, Saving --- and READING! --- past issues of old radio magazines can be certainly worth the space and effort... To-day, in the October 1970 issue of HAM RADIO (pp. 44 - 46), I stumbled upon a short piece by W4NVK entitled, The Simplest Audio Filter. And simple it is, indeed...! Following the parameters therein for a 380-Hz CW audio frequency, I connected an 88-mH torroid coil in series with a 2-ufd. capacitor in the speaker lead of my Drake R-4 receiver...the results are REALLY quite amazing, and surprisingly effective. There are parameters given for CW frequencies of 1200-Hz, down to 380-Hz, but my ear prefers the lower tones, so I stuck with those particular values. If you have a spare 88-mH toroid laying about, along with some extra capacitors, this is a GREAT, easy-to-add-on adjunct that will only enhance the CW performance of your vintage commercial rig, or homebrewed creation...and it's OH SO EASY! ~73~ Eddy VE3CUI - VE3XZ
Re: [drakelist] TR7 oscillation
Back in the day Drake suggested dropping the output to 120 watts and keeping the predriver gain below 1/2 turn. If there is any instability it always seems to be 40 meters. 73, Gary
Re: [drakelist] Cleaning Drake copper chassis
The outside of the chassis is coated with a clear lacquer. The corrosion / rust often occurs where the lacquer coating is compromised. I always clean the rust up best I can and coat the chassis with polyurethane. I am more concerned with preventing further damage to the chassis than appearance. 73, Gary
Re: [drakelist] TR7 PTO Frequency Stability
Tom Evans, AG9X [EMAIL PROTECTED] made an utterance to the drakelist gang -- John, On the website of Carel Mulder, PA0CMU are two versions of what's called a Huff Puff stabilizer circuit. The first is by Rien, PA0TRT from Feb. 2004. A second is from July 2005 when he refined the circuit. http://home.wanadoo.nl/cmulder/drake.htm#bookmark4 There is also a board available for the circuit designed by HB9ABO which appeared in BETTER FREQUENCY STABILITY FOR DRAKE TR7 in the August 1987 issue of Ham Radio magazine. Far Circuits lists the board for $8.00 and a reprint of the construction article is $1.50. The only issues may be parts availability and postage. http://www.farcircuits.net/ -Tom, AG9X On Sun, Jul 20, 2008 at 12:43 PM, John Stringer [EMAIL PROTECTED] wrote: John Stringer [EMAIL PROTECTED] made an utterance to the drakelist gang -- I read somewhere that a board is available to improve PTO stability. Please tell me where I can find it! John. GI3KDR -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] TR7 oscillation
Jim Shorney [EMAIL PROTECTED] made an utterance to the drakelist gang -- Hi Floyd, On Sun, 20 Jul 2008 14:02:22 -0400, K8AC - k8ac wrote: Jim - Just received this message via email and it appears to have come from the drakelist at zerobeat.net site, but when I go there, your message is not in the forum there. Maybe you can tell me the exact URL of the site where you posted it? I haven't posted it to the online forum yet. I'll get around to that :) My TR7 with the rebuilt PA ran just fine for quite a while, until I erected a new 40 meter vertical. The first time I used that antenna with the TR7 on 40, the final oscillated. Switching back to a dipole antenna - no oscillation. Really odd, since there is virtually no reactance seen on either feedline and the antennas are a ways from the rig. Anyway, dialing back the gain pot in the pre-driver eliminated the oscillation but of course reduced my output on 10 meters again. I'll have to try your change and see if that changes things. IIRC, I was able to achieve a condition where it would or would not oscillate depending on what it was connected to (antenna or dummy load). I don't remember the specifics, but I think that things must be just on the edge at that point. Let me know what you come up with. 73 -Jim NU0C -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] TR7 oscillation
Jim Shorney [EMAIL PROTECTED] made an utterance to the drakelist gang -- On Sun, 20 Jul 2008 14:50:02 -0400, Gary Poland wrote: Back in the day Drake suggested dropping the output to 120 watts and keeping the predriver gain below 1/2 turn. If there is any instability it always seems to be 40 meters. Yep, that seems to be the case! :) 7 MHz is just evil, that's it. The devil's band. Or was that 6.66 MHz? Maybe I should have tried holy water first. Oh well. 73 -Jim (holy water cooling? Do the overclockers do this?) NU0C -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
RE: [drakelist] TR7 PTO Frequency Stability
John Stringer [EMAIL PROTECTED] made an utterance to the drakelist gang -- Tom Thank you for the prompt and helpful response. I will follow up. This drakelist really is a great resource! John GI3KDR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Tom Evans, AG9X Sent: 20 July 2008 20:20 To: drakelist@zerobeat.net Subject: Re: [drakelist] TR7 PTO Frequency Stability Tom Evans, AG9X [EMAIL PROTECTED] made an utterance to the drakelist gang -- John, On the website of Carel Mulder, PA0CMU are two versions of what's called a Huff Puff stabilizer circuit. The first is by Rien, PA0TRT from Feb. 2004. A second is from July 2005 when he refined the circuit. http://home.wanadoo.nl/cmulder/drake.htm#bookmark4 There is also a board available for the circuit designed by HB9ABO which appeared in BETTER FREQUENCY STABILITY FOR DRAKE TR7 in the August 1987 issue of Ham Radio magazine. Far Circuits lists the board for $8.00 and a reprint of the construction article is $1.50. The only issues may be parts availability and postage. http://www.farcircuits.net/ -Tom, AG9X On Sun, Jul 20, 2008 at 12:43 PM, John Stringer [EMAIL PROTECTED] wrote: John Stringer [EMAIL PROTECTED] made an utterance to the drakelist gang -- I read somewhere that a board is available to improve PTO stability. Please tell me where I can find it! John. GI3KDR -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net -- -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] TR7 oscillation
Jim Shorney [EMAIL PROTECTED] made an utterance to the drakelist gang -- On Sun, 20 Jul 2008 14:09:36 -0500, BSugarberg wrote: And if you have the Version 1 predriver board? I've got no expereince with that one, so I can't help there. THe DL7MAJ document covers the version 1 board, give it a look. http://www.dl7maj.de/TR-7.html 73 -Jim NU0C -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Cleaning Drake copper chassis
Gary, It almost seems as if some dirt has hardened on the surface. Hard to explain. Applying simple green seems to do some clean up, but residue continues to remain. Since simple green did something, I guess I should continue to apply it. I figured the copper cleaner would be too strong, but knew of it and thought I would ask. I'll try to get a picture of it and forward it. Thanks, Bill --- On Sun, 7/20/08, Gary Poland [EMAIL PROTECTED] wrote: From: Gary Poland [EMAIL PROTECTED] Subject: Re: [drakelist] Cleaning Drake copper chassis To: drakelist@zerobeat.net Date: Sunday, July 20, 2008, 11:54 AM The outside of the chassis is coated with a clear lacquer. The corrosion / rust often occurs where the lacquer coating is compromised. I always clean the rust up best I can and coat the chassis with polyurethane. I am more concerned with preventing further damage to the chassis than appearance. 73, Gary
Re: [drakelist] Cleaning Drake copper chassis
Hi, I'm new to the list but not so new to restoring old things. I've had pretty good luck with a paste made up in the kitchen. Dissolve 1 teaspoon salt in 1 cup white vinegar. Add enough flour to make a paste. Apply the paste to copper and let sit for 15 minutes to 1 hour. Rinse with clean warm water, and polish dry. Don't scrub too much and try to avoid abrasive pads. They scratch the surface. The original laquer coating develops cracks allowing corrosion to set in. If you want to remove all the old laquer use acetone or alcohol. As with any process, try it in some out of the way place first before attacking the whole surface. Jack - Original Message - From: Bill Ellis To: drakelist@zerobeat.net Sent: Sunday, July 20, 2008 5:08 PM Subject: Re: [drakelist] Cleaning Drake copper chassis Gary, It almost seems as if some dirt has hardened on the surface. Hard to explain. Applying simple green seems to do some clean up, but residue continues to remain. Since simple green did something, I guess I should continue to apply it. I figured the copper cleaner would be too strong, but knew of it and thought I would ask. I'll try to get a picture of it and forward it. Thanks, Bill --- On Sun, 7/20/08, Gary Poland [EMAIL PROTECTED] wrote: From: Gary Poland [EMAIL PROTECTED] Subject: Re: [drakelist] Cleaning Drake copper chassis To: drakelist@zerobeat.net Date: Sunday, July 20, 2008, 11:54 AM The outside of the chassis is coated with a clear lacquer. The corrosion / rust often occurs where the lacquer coating is compromised. I always clean the rust up best I can and coat the chassis with polyurethane. I am more concerned with preventing further damage to the chassis than appearance. 73, Gary
Re: [drakelist] Cleaning Drake copper chassis
[EMAIL PROTECTED] made an utterance to the drakelist gang -- I would use Simple Green (which I know you've already tried) and/or Oxyclean which is a stain lifter but will remove many things. Of course there are other things you can try like the cleaner for Mag wheels, but any of them are going to leave a residue if not washed off. My friends at the old Hewlett Packard Metrology Lab in Fullerton, CA used the following to clean equipment for service; 1. Using an air hose, blow out dirt and dust from the chassis. 2. Hose the equipment down with simple green, letting it set for a while. This removes any grease, grime, goo. 3. Then using a pressure sprayer, wash off the chassis with distilled water. 4. Blow the water out with an air hose. 5. The last step was to bake the chassis using an oven at about 180-200 degrees for a couple of days to ensure all the water was out. I've actually done this myself on a computer monitor I spilled 30 SAE oil in, I used my wife's oven and it worked. I once dropped a Cellphone in the toilet, I washed it out under the sink, blew it out and then baked it over night. Guess what, no problems (I could say the audio was stinky but..), worked great! Just my two cents, John N. Hudson III, WA6HYQ Bill Ellis [EMAIL PROTECTED] To Sent by: drakelist@zerobeat.net [EMAIL PROTECTED] cc erobeat.net Subject [drakelist] Cleaning Drake copper 07/19/2008 03:44 chassis PM Please respond to [EMAIL PROTECTED] t.net Has anyone used Cameo brand copper cleaner to clean a Drake chassis. It is usually available in a grocery store. I have a couple that have a caked on dirty crust. I'm wondering if this stuff might be too strong. Thanks, Bill Ellis, WB9CAC -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Cleaning Drake copper chassis
Al Parker [EMAIL PROTECTED] made an utterance to the drakelist gang -- Hi Bill et al, Go to Ron's great info site, http://www.wb4hfn.com/ and you'll find a section on Drake tips. He's drasticly re-arrarnged stuff since I was last there, so search it out, you'll find lots of good info on the way. There are 1 or 2 pages on chassis cleanup, might still be one from me. 73, Al, W8UT New Bern, NC www.boatanchors.org www.hammarlund.info there is nothing -absolutely nothing- half as much worth doing as simply messing about in boats. Ratty, to Mole - Original Message - From: Bill Ellis [EMAIL PROTECTED] To: drakelist@zerobeat.net Sent: Saturday, July 19, 2008 6:44 PM Subject: [drakelist] Cleaning Drake copper chassis Has anyone used Cameo brand copper cleaner to clean a Drake chassis. It is usually available in a grocery store. I have a couple that have a caked on dirty crust. I'm wondering if this stuff might be too strong. Thanks, Bill Ellis, WB9CAC -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
[drakelist] Reducing T-4X CW Monitor Audio Level
Good Day All, Has anyone ever experienced problems with excessive sidetone audio of the CW signal when operating the T-4X...? I have my anti-vox / audio level control cranked fully counter-clockwise, I still find the CW sidetone volume to be excessive for my ears. Is the only fix a larger value potentiometer for R87's existing 100K ohms...? Thanks in advance, my vy ~73~ Eddy VE3CUI - VE3XZ
