Re: [Drakelist] AC-4 Load Bank
I would be very interested in seeing the schematic.. 73 Gene K1NR PS I would not mind having one to check my Collins supply either : - ) On Mon, 26 Nov 2012 11:50:11 -0500 Al Parker anc...@ec.rr.com wrote: hi folks, Some yrs ago there was an article on building a test setup for Collins p.s.'s. I think it was in one of the Collins collector magazines, I can search it out. I came into possession of one of the units, and have made cable adapters for the AC-3/4's, and I think the HP-23's also. It is for voltage only, and did not include a load test, but I have been thinking of adding that to mine. 73, Al, W8UT www.boatanchors.org www.hammarlund.info There is nothing -- absolutely nothing -- half so much worth doing as simply messing about in boats Ratty, to Mole On 11/26/2012 11:30 AM, Hudson, John@CalEMA wrote: That would be a useful test jig. John N. Hudson III, Communications Coordinator 4050 Taylor St, MS 243 San Diego, CA 92110 6192509063 Cell On Nov 24, 2012, at 1:37 PM, Eugene Balinski euge...@nni.com wrote: All, Just wondering if anyone has put together an AC-4 load or test bank ? If so, could you share the plans ? I would like something that would allow one to connect the AC-4. switch on the AC, and measure the various voltage levels on test point, and perhaps even load the supply. Thanks in advance, 73 Gene K1NR - Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.com/ ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] 60 Meter Operation
I see that a 16.1 MHz crystal would cover 5.0 to 5.5 MHz if it can work at all. With the 60 meter channels ranging from 5.3305 to 5.4035 MHz, I wonder if at least receiving might be possible? 73 de W3NU On 11/25/2012 1128, Edward Gable wrote: Hello Bob: If you look at any of the 4 line manuals you will not see an external Xtal listed for the 5 to 6 Mhz region. Me thinks that is because of the VFO operating at 5 Mhz and thus there is no mix that will take you to the 60 meter band. So other than a fairly major circuitry change I don't think it's feasible. Ed Gable k2mp - Original Message - *From:* Robert Look mailto:w8...@comcast.net *To:* drakelist@zerobeat.net mailto:drakelist@zerobeat.net *Sent:* Sunday, November 25, 2012 7:36 AM *Subject:* [Drakelist] 60 Meter Operation Has anyone operated their 4-Line radio on 60 meters USB or CW? ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] AC-4 Load Bank
There wouldn't be much too it. all you need would be a hand full of resistors, using ohm's law to calculate the values. The values would be calculated at the max current the TRx series would draw. On would need to load the 6.3 v filament down to the same current as the tubes, if you don't the unloaded transformer would produce more voltage than normal since it's not powering the tubes. a couple of cheap LED digital panel mount meter could be used to monitor the voltages, plate, screen, and bias likewise a meter could be used to monitor current on the plate supply. I don't feel it would be necessary to monitor bias current or screen voltage current either. it would be an interesting project, that would make checking the supply quick. A few test points for an 'oscope to monitor ripple would be icing on the cake later mike, wb8vge On Nov 27, 2012, at 10:21 AM, Eugene Balinski wrote: I would be very interested in seeing the schematic.. 73 Gene K1NR PS I would not mind having one to check my Collins supply either : - ) On Mon, 26 Nov 2012 11:50:11 -0500 Al Parker anc...@ec.rr.com wrote: hi folks, Some yrs ago there was an article on building a test setup for Collins p.s.'s. I think it was in one of the Collins collector magazines, I can search it out. I came into possession of one of the units, and have made cable adapters for the AC-3/4's, and I think the HP-23's also. It is for voltage only, and did not include a load test, but I have been thinking of adding that to mine. 73, Al, W8UT www.boatanchors.org www.hammarlund.info There is nothing -- absolutely nothing -- half so much worth doing as simply messing about in boats Ratty, to Mole On 11/26/2012 11:30 AM, Hudson, John@CalEMA wrote: That would be a useful test jig. John N. Hudson III, Communications Coordinator 4050 Taylor St, MS 243 San Diego, CA 92110 6192509063 Cell On Nov 24, 2012, at 1:37 PM, Eugene Balinski euge...@nni.com wrote: All, Just wondering if anyone has put together an AC-4 load or test bank ? If so, could you share the plans ? I would like something that would allow one to connect the AC-4. switch on the AC, and measure the various voltage levels on test point, and perhaps even load the supply. Thanks in advance, 73 Gene K1NR - Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.com/ ___ 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] AC-4 Load Bank
Hi folks, I have scanned the article, one small page, written by K0ZQD in V2 Iss. 16 of The Collins Coll's. MMag. It gives the schematic, leaving construction details to the builder. I also have scanned a skem of the p.s. pinouts for the 516F-2, from the same issue. Make your own adapter(s) for various supplies, if wanted. I'll send the scans to those who have/do request it. Mike brings up a good point, as written, the voltages are unloaded, and will be high. I'd like to switch in the load, so a relay for the HV would be advisable for that. As Mike says, use ohms law for resistor sizing, and you'll know, close enuf, what the currents will be. I've used my test rig on a lot of Collins and Drake supplies, it's a quick test, doesn't show ripple, but ckg ESR on the filter caps will tell you what you need to do there (do it before you power up the supply, so the caps don't do any reforming). Al, W8UT www.boatanchors.org www.hammarlund.info There is nothing -- absolutely nothing -- half so much worth doing as simply messing about in boats Ratty, to Mole On 11/27/2012 1:06 PM, Mike Bryce wrote: There wouldn't be much too it. all you need would be a hand full of resistors, using ohm's law to calculate the values. The values would be calculated at the max current the TRx series would draw. On would need to load the 6.3 v filament down to the same current as the tubes, if you don't the unloaded transformer would produce more voltage than normal since it's not powering the tubes. a couple of cheap LED digital panel mount meter could be used to monitor the voltages, plate, screen, and bias likewise a meter could be used to monitor current on the plate supply. I don't feel it would be necessary to monitor bias current or screen voltage current either. it would be an interesting project, that would make checking the supply quick. A few test points for an 'oscope to monitor ripple would be icing on the cake later mike, wb8vge On Nov 27, 2012, at 10:21 AM, Eugene Balinski wrote: I would be very interested in seeing the schematic.. 73 Gene K1NR PS I would not mind having one to check my Collins supply either : - ) On Mon, 26 Nov 2012 11:50:11 -0500 Al Parker anc...@ec.rr.com wrote: hi folks, Some yrs ago there was an article on building a test setup for Collins p.s.'s. I think it was in one of the Collins collector magazines, I can search it out. I came into possession of one of the units, and have made cable adapters for the AC-3/4's, and I think the HP-23's also. It is for voltage only, and did not include a load test, but I have been thinking of adding that to mine. 73, Al, W8UT www.boatanchors.org www.hammarlund.info There is nothing -- absolutely nothing -- half so much worth doing as simply messing about in boats Ratty, to Mole On 11/26/2012 11:30 AM, Hudson, John@CalEMA wrote: That would be a useful test jig. John N. Hudson III, Communications Coordinator 4050 Taylor St, MS 243 San Diego, CA 92110 6192509063 Cell On Nov 24, 2012, at 1:37 PM, Eugene Balinski euge...@nni.com wrote: All, Just wondering if anyone has put together an AC-4 load or test bank ? If so, could you share the plans ? I would like something that would allow one to connect the AC-4. switch on the AC, and measure the various voltage levels on test point, and perhaps even load the supply. Thanks in advance, 73 Gene K1NR - Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.com/ ___ 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] 60 Meter Operation
The T-4X IF frequency is 5645 khz, that’s why the manual states not to use the frequencies 5 to 6 mhz. 73, Gary ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] 60 Meter Operation
Like another Gary pointed out, the IF is in the way. It will work to use a 16.1MHz crystal. You will get images and spurs though. If you are lucky (I haven't run the numbers) they are far enough from the 60m channels to let you RECEIVE them... BUT do not try to TRANSMIT, you will put out spurs that are out of the ham bands. IF, PTO, mixing products, who knows what... ;-) 73, Gary WB6OGD - Original Message - From: Charles Ring w...@roadrunner.com To: Edward Gable ega...@rochester.rr.com Cc: drakelist@zerobeat.net Sent: Tue, 27 Nov 2012 17:12:55 - (UTC) Subject: Re: [Drakelist] 60 Meter Operation I see that a 16.1 MHz crystal would cover 5.0 to 5.5 MHz if it can work at all. With the 60 meter channels ranging from 5.3305 to 5.4035 MHz, I wonder if at least receiving might be possible? 73 de W3NU On 11/25/2012 1128, Edward Gable wrote: Hello Bob: If you look at any of the 4 line manuals you will notsee an external Xtal listed for the 5 to 6 Mhz region. Me thinksthat is because of the VFO operating at 5 Mhz and thus thereis no mix that will take you to the 60 meter band. So other thana fairly major circuitry change I don't think it's feasible. Ed Gable k2mp - Original Message - From:Robert LookTo:drakelist@zerobeat.netSent: Sunday, November 25, 2012 7:36 AMSubject: [Drakelist] 60 Meter Operation Has anyone operated their 4-Line radio on 60 meters USB or CW? ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] 60 Meter Operation
Is the issue of frequency accuracy, plus stability, not a consideration when attempting 60 meter operation with a 4-line? Changing PTO frequency would still result in one having to deal with accuracy and stability issues which, for channelized operation, are more critical. Just some random thoughts... 73, Evan -Original Message- From: Gary Winblad garywinb...@comcast.net To: Charles Ring w...@roadrunner.com Cc: drakelist drakelist@zerobeat.net Sent: Tue, Nov 27, 2012 5:58 pm Subject: Re: [Drakelist] 60 Meter Operation Like another Gary pointed out, the IF is in the way. It will work to use a 16.1MHz crystal. You will get images and spurs though. If you are lucky (I haven't run the numbers) they are far enough from the 60m channels to let you RECEIVE them... BUT do not try to TRANSMIT, you will put out spurs that are out of the ham bands. IF, PTO, mixing products, who knows what... ;-) 73, Gary WB6OGD - Original Message - From: Charles Ring w...@roadrunner.com To: Edward Gable ega...@rochester.rr.com Cc: drakelist@zerobeat.net Sent: Tue, 27 Nov 2012 17:12:55 - (UTC) Subject: Re: [Drakelist] 60 Meter Operation I see that a 16.1 MHz crystal would cover 5.0 to 5.5 MHz if it can work at all. With the 60 meter channels ranging from 5.3305 to 5.4035 MHz, I wonder if at least receiving might be possible? 73 de W3NU On 11/25/2012 1128, Edward Gable wrote: Hello Bob: If you look at any of the 4 line manuals you will not see an external Xtal listed for the 5 to 6 Mhz region. Me thinks that is because of the VFO operating at 5 Mhz and thus there is no mix that will take you to the 60 meter band. So other than a fairly major circuitry change I don't think it's feasible. Ed Gable k2mp - Original Message - 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px blackFrom:Robert Look To:drakelist@zerobeat.net Sent: Sunday, November 25, 2012 7:36 AM Subject: [Drakelist] 60 Meter Operation Has anyone operated their 4-Line radio on 60 meters USB or CW? ___ 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] Please, I want out... How can I get removed?
On Tue, 27 Nov 2012 19:37:37 -0800, centi...@nym.hush.com wrote: Yikes!?!?! It is STILL the last link at the end of every message. ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] 60 Meter Operation
On Tue, 27 Nov 2012 18:27:34 -0500 (EST), K9sqg wrote: Is the issue of frequency accuracy, plus stability, not a consideration when attempting 60 meter operation with a 4-line? Perhaps, but maybe less so than the in-band spurs. 73 -Jim NU0C -- Theres something out of place lets go and poke it with a stick. The Doctor, Amys Choice ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Please, I want out... How can I get removed?
sorry to add to the wasted bandwidth, but it is likely that this is automated spam. Chuck, K1OM On Tue, Nov 27, 2012 at 11:00 PM, Jim Shorney jshor...@inebraska.comwrote: On Tue, 27 Nov 2012 19:37:37 -0800, centi...@nym.hush.com wrote: Yikes!?!?! It is STILL the last link at the end of every message. ___ 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] Please, I want out... How can I get removed?
On Tue, 27 Nov 2012 23:11:14 -0500, Chuck Grandgent wrote: sorry to add to the wasted bandwidth, but it is likely that this is automated spam. I don't think so. He responded via direct to my post, and the header trail checks out. It does not appear to be spoofed, at least. 73 -Jim NU0C -- Theres something out of place lets go and poke it with a stick. The Doctor, Amys Choice ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
