Re: [drakelist] R-4 Series Crystal Alternatives
Ron Wagner <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Although you will need to be careful on purity of signal, check out NJQRP's DDS. http://www.amqrp.org/kits/dds60/ I have not been watching them closely lately, but at one time they had a DDS microchip controlled signal generator. Basically a little bit of engineering would make it a replacement for an FS4. 73, Ron WD8SBB -- Submissions:[EMAIL PROTECTED] 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] R-4 Series Crystal Alternatives
Woodbox Radio no longer makes them. Same for Misty Hollow Enterprises. -Original Message- From: Guy Giacopuzzi <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Sent: Thu, 20 Dec 2007 5:17 pm Subject: Re: [drakelist] R-4 Series Crystal Alternatives Guy Giacopuzzi <[EMAIL PROTECTED]> made an utterance to the drakelist gang? --? Ok, can someone give some details as to the "Italian outfit" that makes the DDS synthesizer?? ? Guy,? WA6OQQ? ? Jim Pruitt wrote:? ? >"Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang? >--? >Hello Eddy.? >? >I have built 2 of the Steve Hageman "Give that Drake Receiver a New Lease on? >Life" ( http://www.arrl.org/qst/2004/06/hageman.pdf ) projects from the? >June 2004 issue of QST and troubleshooting info at? >http://www.geocities.com/hagtronics/r4.html and more troubleshooting info at? >N0SS site at http://www.n0ss.net/drake_het_osc_xtal_elim_notes.pdf off of? >his page at http://www.n0ss.net/index_general.html . Tom has an Excel? >spreadsheet bill of materials at? >http://www.n0ss.net/drake_xtal_elim_proj_parts_list.xls but it has not been? >updated since 2005. The Hageman FS4 clone works well and looks good. The? >cost is a bit high (but what DIY projects are not more expensive than? >commercial products these days( (I think mine cost in the neighborhood of? >$150 with all new parts and a pc board from Fred at FAR Circuits) and I was? >not that impressed with some of the methods used in the design but it is? >still a good item and does the job very well. The part that I did not like? >was that the segments were 500khz segments (starting at 12.6mhz for 160? >meters). Why does that matter since most band segments tuned are 500khz,? >you ask. I am in MARS and some of the frequencies fall close to the IF area? >where Drake recommends using crystals that start in the middle of the band? >segment (when using the T4X series and transceiving). This is mostly a non? >issue now, since MARS outlawed older amateur gear on their frequencies.? >Other than that the Hageman FS4 clone is ok. It does look nice in the MS4? >enclosure with the vinyl overlays that Tom Hammond, N0SS had made that? >resemble the face of the FS4. Tom also had ovelays made for a Hammond? >enclosure for those that did not want to put it in a MS4.? >? >I also looked very hard at the project at? >http://www.jimcom.net/elehobby/r4cdds/index.html which uses an Analog? >Devices AD9850 DDS chip. The web page is in Japanese (I do not read or? >speak Japanese) but the schematic is viewable and the code for the Pic 16F84? >is there.? >? >There are other Analog Devices chips that would probably work better like? >the DDS_Controllers group project that uses a AD9912 (I think) DDS chip.? >? >You can also cheat and use a signal generator to replace the FS4 (expensive? >waste of test gear) or use a vfo if you have one that covers those ranges? >that you need.? >? >The DDS signal generators that use the AD9850 series are probably the? >easiest and cheapest to come by as there were many scattered across the web.? >? >I personally do not like having to buy a bunch of crystals since? >International Crystal is harder to deal with these days and Jan Crystals web? >page is hard to use. I guess Bomar is still in business (correct me if I am? >wrong). It is getting harder to buy crystals from crystal manufacturers (at? >least at a reasonable price) because the mass production market has moved to? >cpu clock crystals.? >? >The Italian outfit that is making a DDS synthesizer for the Drake twins? >makes a good product from what I have gathered on this list but that price? >is way out of my budget.? >? >If you are inclined to make one of the DDS sythesizers you might look at the? >NJQRP DDS daughtercard at http://www.amqrp.org/kits/dds60/ . It uses a? >AD9851 which is not included with the kit but may still be available? >directly from Analog Devices as a free sample (they are really good about? >samples of current production chips but samples are not available for chips? >that are at the end of their production life).? >? >Trev (now K6ESE) had a DDS pc board available on the QRP-L group for a while? >that used an Atmel AT89S8252 cpu. That project is written up at? >http://www.k6ese.com/DDS_Project.htm but is no longer available but the? >schematic as well as the source code are available on his site.? >? >There are many many other web sites that have a AD9850-51-54 series DDS? >synthesizer project outlined as well as some newer ones like the? >DDS_Controller Yahoo group.? >? >Craig Johnson, AA0ZZ, and the group hanging out at the DDS-VFO Yahoo group? >and are a great bunch of guys. Craig made the IQ-Pro DDS project for NJQRP? >or AMQrp group and now are working on a better version. Craig's homepage is? >at http://home.comcast.net/~aa0zz/aa0zz-main.html so you might look at that.? >? >
Re: [drakelist] R-4 Series Crystal Alternatives
john <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Try "Wood Box Radio" but I don't think they do anymore. At 05:17 PM 12/20/2007, you wrote: Guy Giacopuzzi <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Ok, can someone give some details as to the "Italian outfit" that makes the DDS synthesizer? Guy, WA6OQQ Jim Pruitt wrote: "Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Hello Eddy. I have built 2 of the Steve Hageman "Give that Drake Receiver a New Lease on Life" ( http://www.arrl.org/qst/2004/06/hageman.pdf ) projects from the June 2004 issue of QST and troubleshooting info at http://www.geocities.com/hagtronics/r4.html and more troubleshooting info at N0SS site at http://www.n0ss.net/drake_het_osc_xtal_elim_notes.pdf off of WARNING: The remainder of this message has not been transferred. The estimated size of this message is 9390 bytes. Click on the Retrieve From Server icon above and check mail again to get the whole thing. (If you're reading this in the preview pane, you'll need to open the message to see the icon.) If the Retrieve From Server icon is not showing, then this message is no longer on the server. -- Submissions:[EMAIL PROTECTED] 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] R-4 Series Crystal Alternatives
Guy Giacopuzzi <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Ok, can someone give some details as to the "Italian outfit" that makes the DDS synthesizer? Guy, WA6OQQ Jim Pruitt wrote: "Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Hello Eddy. I have built 2 of the Steve Hageman "Give that Drake Receiver a New Lease on Life" ( http://www.arrl.org/qst/2004/06/hageman.pdf ) projects from the June 2004 issue of QST and troubleshooting info at http://www.geocities.com/hagtronics/r4.html and more troubleshooting info at N0SS site at http://www.n0ss.net/drake_het_osc_xtal_elim_notes.pdf off of his page at http://www.n0ss.net/index_general.html . Tom has an Excel spreadsheet bill of materials at http://www.n0ss.net/drake_xtal_elim_proj_parts_list.xls but it has not been updated since 2005. The Hageman FS4 clone works well and looks good. The cost is a bit high (but what DIY projects are not more expensive than commercial products these days( (I think mine cost in the neighborhood of $150 with all new parts and a pc board from Fred at FAR Circuits) and I was not that impressed with some of the methods used in the design but it is still a good item and does the job very well. The part that I did not like was that the segments were 500khz segments (starting at 12.6mhz for 160 meters). Why does that matter since most band segments tuned are 500khz, you ask. I am in MARS and some of the frequencies fall close to the IF area where Drake recommends using crystals that start in the middle of the band segment (when using the T4X series and transceiving). This is mostly a non issue now, since MARS outlawed older amateur gear on their frequencies. Other than that the Hageman FS4 clone is ok. It does look nice in the MS4 enclosure with the vinyl overlays that Tom Hammond, N0SS had made that resemble the face of the FS4. Tom also had ovelays made for a Hammond enclosure for those that did not want to put it in a MS4. I also looked very hard at the project at http://www.jimcom.net/elehobby/r4cdds/index.html which uses an Analog Devices AD9850 DDS chip. The web page is in Japanese (I do not read or speak Japanese) but the schematic is viewable and the code for the Pic 16F84 is there. There are other Analog Devices chips that would probably work better like the DDS_Controllers group project that uses a AD9912 (I think) DDS chip. You can also cheat and use a signal generator to replace the FS4 (expensive waste of test gear) or use a vfo if you have one that covers those ranges that you need. The DDS signal generators that use the AD9850 series are probably the easiest and cheapest to come by as there were many scattered across the web. I personally do not like having to buy a bunch of crystals since International Crystal is harder to deal with these days and Jan Crystals web page is hard to use. I guess Bomar is still in business (correct me if I am wrong). It is getting harder to buy crystals from crystal manufacturers (at least at a reasonable price) because the mass production market has moved to cpu clock crystals. The Italian outfit that is making a DDS synthesizer for the Drake twins makes a good product from what I have gathered on this list but that price is way out of my budget. If you are inclined to make one of the DDS sythesizers you might look at the NJQRP DDS daughtercard at http://www.amqrp.org/kits/dds60/ . It uses a AD9851 which is not included with the kit but may still be available directly from Analog Devices as a free sample (they are really good about samples of current production chips but samples are not available for chips that are at the end of their production life). Trev (now K6ESE) had a DDS pc board available on the QRP-L group for a while that used an Atmel AT89S8252 cpu. That project is written up at http://www.k6ese.com/DDS_Project.htm but is no longer available but the schematic as well as the source code are available on his site. There are many many other web sites that have a AD9850-51-54 series DDS synthesizer project outlined as well as some newer ones like the DDS_Controller Yahoo group. Craig Johnson, AA0ZZ, and the group hanging out at the DDS-VFO Yahoo group and are a great bunch of guys. Craig made the IQ-Pro DDS project for NJQRP or AMQrp group and now are working on a better version. Craig's homepage is at http://home.comcast.net/~aa0zz/aa0zz-main.html so you might look at that. I do not know if the above helps or just muddies the waters but I hope that it shows you that there are other alternatives to the FS4. Good luck. Jim Pruitt - Original Message - From: EP Swynar To: [EMAIL PROTECTED] Sent: Wednesday, December 19, 2007 9:33 AM Subject: [drakelist] R-4 Series Crystal Alternatives Good Afternoon All, I'm curious about the experience of others in t
Re: [drakelist] TR4-C interface to Ameritron AL-811
Garey, Thanks for your answer. I think I will just use the linear on my other rig, which is a Yaesu FT 1000 MD V. Sincerely, Boyd Garey Barrell <[EMAIL PROTECTED]> wrote: Garey Barrell made an utterance to the drakelist gang -- Boyd - Probably not. The problem here is that the PiNet output circuit is designed to match the plate impedance of three tubes to ~50 ohms. By removing two tubes from the plate circuit, you are tripling the impedance of that side of the network. It's possible that it could handle that, but unlikely. The tank Q would be very high, and so extremely narrowband and with much higher losses. Safer than letting the plate caps "float" would be to reduce the screen voltage on the Final, but the matching problem would still exist. 73, Garey - K4OAH St. Charles, IL Boyd Van Horn wrote: > Garey, I know we need to leave all the finals in on a TR-4 because of > the series parallel filaments, but could one leave the plate caps off > one or two tubes to cut the power output instead of using a power > reducing network ? Boyd W0BUW > > */Garey Barrell /* wrote: > > > Garey Barrell made an utterance to the drakelist gang > -- > There is a set of N.O. contacts on Pins 5 and 8 of the Jones > connector > that close on transmit that can be used to ground the relay in the > Ameritron. They are rated at 2 A at 250 VAC so no problem handling > the > relay current. If you're using an AC-4 power supply, these > contacts are > wired to the two-pin connector on the side of the AC-4 marked VOX. > > The TR-4C expects a negative ALC voltage from the linear. If the > Ameritron provides this, it will work, but may require some sort of > level adjustment. The TR-4C has MUCH too much power output to > drive a 1 > kW linear. Aside from the fact that the amp is less than one-half > S-Unit increase in signal strength over the TR-4C, you will need some > sort of resistive pad between the two to keep from overdriving the > amp. The TR-4C will put out 200+ watts and the AMP will probably put > out 500. > > 73, Garey - K4OAH > Glen Allen, VA > > Drake 2-B, 4-B & C-Line Service Supplement CDs > > > > > Boyd Van Horn wrote: > > Could someone out there help me with the interface to use > between my > > TR4-C's and the Ameritron AL-811. The ameritron has its own > > Transmit/Receive relay which uses 12 VDC at a 100 ma when > grounded. Is > > there anyway to use the ALC circuit on the Amp with the Drake ? > Boyd > > W0BUW > > > > -- > Submissions: [EMAIL PROTECTED] > 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: [EMAIL PROTECTED] 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] R-4 Series Crystal Alternatives
Ron Wagner <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Eddy,
The HR mag article has issues. I spoke with the author some time back,
and he was not interested in being a technical resource for an out of
date article. BTW He is not being difficult, just honest.
I did however get him to send me updates that he had done with the
agreement that I would not "bother" him. I am sure I have them on a CD
somewhere. I however have taken the path of TR7 for "all band" and the
twins for "ham band" work.
The issues included a variac diode that is not longer able to be found,
and spurs (I think) 100 Kc either side of the frequency that were
generated. I think there are variacs that are usable (requires a large
min to max cap ratio), but the spurs are still a problem. So consider
this one a less then desirable solution.
73,
Ron WD8SBB
On Wed, 19 Dec 2007, EP Swynar wrote:
Good Afternoon All,
--- August 1972 HAM RADIO magazine ("Frequency Synthesizer for the Drake R-4";
--
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Re: [drakelist] TR4-C interface to Ameritron AL-811
Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Boyd - Probably not. The problem here is that the PiNet output circuit is designed to match the plate impedance of three tubes to ~50 ohms. By removing two tubes from the plate circuit, you are tripling the impedance of that side of the network. It's possible that it could handle that, but unlikely. The tank Q would be very high, and so extremely narrowband and with much higher losses. Safer than letting the plate caps "float" would be to reduce the screen voltage on the Final, but the matching problem would still exist. 73, Garey - K4OAH St. Charles, IL Boyd Van Horn wrote: Garey, I know we need to leave all the finals in on a TR-4 because of the series parallel filaments, but could one leave the plate caps off one or two tubes to cut the power output instead of using a power reducing network ? Boyd W0BUW */Garey Barrell <[EMAIL PROTECTED]>/* wrote: Garey Barrell made an utterance to the drakelist gang -- There is a set of N.O. contacts on Pins 5 and 8 of the Jones connector that close on transmit that can be used to ground the relay in the Ameritron. They are rated at 2 A at 250 VAC so no problem handling the relay current. If you're using an AC-4 power supply, these contacts are wired to the two-pin connector on the side of the AC-4 marked VOX. The TR-4C expects a negative ALC voltage from the linear. If the Ameritron provides this, it will work, but may require some sort of level adjustment. The TR-4C has MUCH too much power output to drive a 1 kW linear. Aside from the fact that the amp is less than one-half S-Unit increase in signal strength over the TR-4C, you will need some sort of resistive pad between the two to keep from overdriving the amp. The TR-4C will put out 200+ watts and the AMP will probably put out 500. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B & C-Line Service Supplement CDs Boyd Van Horn wrote: > Could someone out there help me with the interface to use between my > TR4-C's and the Ameritron AL-811. The ameritron has its own > Transmit/Receive relay which uses 12 VDC at a 100 ma when grounded. Is > there anyway to use the ALC circuit on the Amp with the Drake ? Boyd > W0BUW > -- Submissions: [EMAIL PROTECTED] 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:[EMAIL PROTECTED] 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] SPR-4 audio
I made a typo when I posted that. It's an SPR-4, not an SPR-3. I'm new to the hobby and not that familiar with testing radios. I've been reading up on the Drake equipment I just got though, and I have the manuals. I have a TR4 with MS3 and AC3 also. Both radios have the optional noise blankers installed. Could that be related to the sound problem on the SPR-4? 73 Steve [EMAIL PROTECTED] wrote: That is one rare radio...I always start with visual inspection, then voltage checks. With tube gear, making sure filaments are lit, substituting tubes, etc. are all good approaches. Get it working and then put it on eBay, you must have the only SPR-3 in the world, hi hi.
Re: [drakelist] R-4 Series Crystal Alternatives
"EP Swynar" <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Hi Jim, Many thanks for sharing all your thoughts & personal experiences with me like that... Well, I've gotta tell you, the price of bells & whistles-laden peripherals like that is most discouraging to me, personally, considering what the rigs are going to cost me, & all. But you've given me reaffirmation of the notion of employing a signal generator as a crystal replacement, and I believe that's exactly what I'll do here... Initially, I'll rig up an ancient RF generator that I have here --- with a separate frequency counter --- just to see what might happen. If it works reasonably well, I found a piece by Doug DeMaw in an 80's issue of QST that describes the construction of a simple 3-transistor RF generator, employing cheap, easy-to-find (as in Radio Shack) MPF-102 & 2N transistors. I could easily cobble-up a dedicated generator for this purpose using that design... JAN Crystals was nice enough to write back to me the other day, & quoted a price of $20.00 for an HC-6/U crystal...they have a minimum order of $25.00, though, and a shipping/handling charge of $6.00, so the grand total for just one crystal would be $31.00... I know I have 90% of the parts here already to make the DeMaw circuit --- for free! Thanks again for taking the time to write, Jim --- and I WILL look up those references you sent me, too, I promise...! ~73!~ Eddy VE3CUI - VE3XZ *** - Original Message - From: "Jim Pruitt" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, December 20, 2007 12:08 AM Subject: Re: [drakelist] R-4 Series Crystal Alternatives > > "Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang > -- > Hello Eddy. > > I have built 2 of the Steve Hageman "Give that Drake Receiver a New Lease on > Life" ( http://www.arrl.org/qst/2004/06/hageman.pdf ) projects from the > June 2004 issue of QST and troubleshooting info at > http://www.geocities.com/hagtronics/r4.html and more troubleshooting info at > N0SS site at http://www.n0ss.net/drake_het_osc_xtal_elim_notes.pdf off of > his page at http://www.n0ss.net/index_general.html . Tom has an Excel > spreadsheet bill of materials at > http://www.n0ss.net/drake_xtal_elim_proj_parts_list.xls but it has not been > updated since 2005. The Hageman FS4 clone works well and looks good. The > cost is a bit high (but what DIY projects are not more expensive than > commercial products these days( (I think mine cost in the neighborhood of > $150 with all new parts and a pc board from Fred at FAR Circuits) and I was > not that impressed with some of the methods used in the design but it is > still a good item and does the job very well. The part that I did not like > was that the segments were 500khz segments (starting at 12.6mhz for 160 > meters). Why does that matter since most band segments tuned are 500khz, > you ask. I am in MARS and some of the frequencies fall close to the IF area > where Drake recommends using crystals that start in the middle of the band > segment (when using the T4X series and transceiving). This is mostly a non > issue now, since MARS outlawed older amateur gear on their frequencies. > Other than that the Hageman FS4 clone is ok. It does look nice in the MS4 > enclosure with the vinyl overlays that Tom Hammond, N0SS had made that > resemble the face of the FS4. Tom also had ovelays made for a Hammond > enclosure for those that did not want to put it in a MS4. > > I also looked very hard at the project at > http://www.jimcom.net/elehobby/r4cdds/index.html which uses an Analog > Devices AD9850 DDS chip. The web page is in Japanese (I do not read or > speak Japanese) but the schematic is viewable and the code for the Pic 16F84 > is there. > > There are other Analog Devices chips that would probably work better like > the DDS_Controllers group project that uses a AD9912 (I think) DDS chip. > > You can also cheat and use a signal generator to replace the FS4 (expensive > waste of test gear) or use a vfo if you have one that covers those ranges > that you need. > > The DDS signal generators that use the AD9850 series are probably the > easiest and cheapest to come by as there were many scattered across the web. > > I personally do not like having to buy a bunch of crystals since > International Crystal is harder to deal with these days and Jan Crystals web > page is hard to use. I guess Bomar is still in business (correct me if I am > wrong). It is getting harder to buy crystals from crystal manufacturers (at > least at a reasonable price) because the mass production market has moved to > cpu clock crystals. > > The Italian outfit that is making a DDS synthesizer for the Drake twins > makes a good product from what I have gathered on this list but that pric
Re: [drakelist] SPR-3 audio
That is one rare radio...I always start with visual inspection, then voltage checks.? With tube gear, making sure filaments are lit, substituting tubes, etc. are all good approaches.? Get it working and then put it on eBay, you must have the only SPR-3 in the world, hi hi. -Original Message- From: Steve Aronson <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Sent: Wed, 19 Dec 2007 10:17 pm Subject: [drakelist] SPR-3 audio "Steve Aronson" <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- I have an SPR-3 which has lost its audio and the S meter sits on 0. Any hints, tricks, tips etc on where to start troubleshooting this? 73 Steve -- Submissions:[EMAIL PROTECTED] 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 -- More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com
