[Drakelist] R-4C Antenna Input Direct To Mixer
Hi to all: This question has to do with the antenna input for the Drake R-4C. Has anyone tried bypassing the RF amp and feeding the antenna input directly to the first mixer in the R-4C? 73, Chuck___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Knobs
Hi to all:Who was the manufacture and supplier of the Drake antenna tuner knobs and amplifier knobs?73,Chuck___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] L4-B Vernier Red Pointer for Plate Control
Hi to all:Is there a supplier for the red pointer and vernier control that goes to the Plate control of the Drake L-4B?Thank you.Chuck___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Class A Audio Amp and Equalizer for Drake R-4C
Hi to all:Here is another link to possible class A tube/valve amps for Drake R-4C.Do you think any of these little class A amps could be made to work in the Drake?73,Chuck - AA5WG http://shop.ebay.com/indeed-hi-fi-lab/m.html ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] (no subject)
Hi to all Drake fans: Do you think the Drake R-4C could be modified to accommodate one of these two class A audio amps and the graphic equalizer? At present I don't have the schematics for these products. Here are the three links to look at: http://cgi.ebay.com/Valve-Class-Tube-Headphone-Amplifier-pre-Bravo-V2-/260697180184?pt=LH_DefaultDomain_0&hash=item3cb2c34818#ht_5958wt_1140 http://cgi.ebay.com/Bravo-V1-Kopfhorerverstarker-Tube-Class-Rohr-GE1-/260701027235?pt=LH_DefaultDomain_77&hash=item3cb2fdfba3#ht_6316wt_1140 http://cgi.ebay.com/Bravo-Tube-Headphone-Amplifier-V3-EQ-Equalizer-valve-US-/260677485333?pt=LH_DefaultDomain_0&hash=item3cb196c315#ht_3975wt_1176 73,Chuck - AA5WGCedar, Michigan U.S.A. ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] MN4C
Hi Curt: Remove the balun and try again without the balun. Use low power to see if there is a change. And, remove the balun and replace with a homebrew balun and try again. I did a test on 160 meters and the balun got so hot I could not touch it. Balun damage is not restricted to 160 meters. It can occur as high as 10 meters too. Please let us know what happens. 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] W8JI - Mixer mods for the Drake R-4C
Hi to all the Drake Fans: Hi Don. I too would like to know if anyone has modified the R-4C mixers? Thank you. Chuck - AA5WG Cedar, Michigan ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Large Numbers Digital Readout - C Line
Hello to all Drake fans: Are there any recommendations for quality large digit digital readouts for the Drake C - Line? I would like to have separate readout for both transmitter (T-4XC) and receiver (R-4C). Can this be done? Thank you to all. 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Digital Readout - R-4C and T-4XC
What is the preferred Digital readout system for the Drake C-line, (R-4C and T-4XC)? What system has the largest readout digits? Thank you. 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Phenolic and Supplies
Evan - K9SQG: I understand and what you say makes sense. Thank you. Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Phenolic and Drake Supplies
Hi Evan: Adding a fan to the supply is a neat idea. Could you include a cleaning filter to the fan, i.e foam insert maybe? 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Phenolic and Drake Supplies
Hi Evan - K9SQG: Good luck with your cutting of phenolic. I look forward to seeing your nice Drake supply work. 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Cutting Phenolics with Table Saws
Hi Evan and all Drake fans: Sir, you are welcome. Upwind and outside seems like a good choice. Good luck with your work. 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Cutting Phenolic and Epoxy Laminates
Hi to all: I recommend using a diamond coated blade for your table saw to cut phenolic or expoxy laminate boards. I cut this stuff allot and the diamond coated saw blade is what works best for me. Remember too, phenolic and epoxy laminates require special dust collection systems designed for this particulate. This type of dust is very fine and can pass through the filters of normal dust collection systems. It is so fine you cannot see it floating in the air. Then, your lungs breath it in. 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] R7 transceive with T-4XC???
Hi to all: Can the Drake R7 receiver transceive with the Drake T-4XC transmitter? Or, would I have to use the mute button on the R7 before transmitting? 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Drake R4C
Hi to all: A couple of days ago there was a very loud crack, pop or bang then some continuous crackling that came from the speaker. I was in the next room when this happened. At present, the receiver will not receive. The S-meter is pegged to the right. When turning the radio on the S-meter smashes against the right side of meter. Normal characteristics of the S meter, in the past during warm up, has been a slow rise to the right and a gentle lowering to the the left. The S meter would then settle to S-zero if a dummy load was connected. The crystal calibrator cannot be heard now. When moving volume control there is lots of crackling or scratching noises. I replaced all tubes in the radio and the above symptoms are still present. I did not see any smoke or fire. During visual inspection on top and bottom of chassis I did not see any burnt components. What should I do next? 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] R4C - "Crack Bank"
Hello to all. Today there was a very loud "Bank and Crack" from the speaker. There is lots of scratching noises now coming from the speaker. The S-meter is now pegged against the right side of meter, 60db plus, while trying to receive. What is the best first step I should take to find the problem? 73, Chuck - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] T4X-C Won't maintain output
Hi to all: After aligning the T4X-C the power output is equal when switching between R4-C or T4X-C control via the transcieve switch on the transmitter. Now, the output is lower when the transcieve switch is in the T4X-C position. This is for 80 meters. I aligned the transmitter again and output is same/normal when switching between receive or transmitter control via the transcieve swithch on the T4X-C. Again, later, the output falls when selecting the transmitter control via the transceive swithch on the T4X-C. I may tune up the transmitter again. However, I am gettig tired of doing this. Any ideas what is going on? 73, Chuck ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] T4X-C. Now more output power and no RFI?
Hi to all My T4X-C always put out about 110 -120 watts, less on 20 - 10 meters. On 40 meters there was always RFI problems with our organ. Today, the T4X-C was putting out 150 watts on 80 meters. All the other bands had much more output power too. Amp meter said 400 - 450 mills. 320 - 350 mills is normal for me. 400 - 450 amp mills seems to high? Is it? Now there is no RFI problem on 40 meters. What is going on? Any ideas? 73, Chuck - AA5WG Cedar, Michigan ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Drake C-Line, Transceive switch on T4X-C, Changing signal strenghts
Hi to all: When switching between RCVR and XMTR, by using the "Transceive" switch on the T4XC, received signal strength remains constant (the same) on some bands while others bands produces a drop or gain is signal strength. I am using the calibrator as the received signal with the AGC set to fast, 50 ohm dummy load selected then antenna selected for comparison. Some times it is the XMTR that has higher received signal strength. Some times the RCVR has stronger received signal strength. And, some times both rigs have identical received signal strength when selecting between RCVR and XMTR, via Transceive switch on T4XC, on different bands. i.e. 80 meters has produced no difference in received signal strength when switching between RCVR or XMTR. i.e. 160 meters produces 5 db stronger received signal strength when T4X-C "Transceive" switch is set to RCVR. The received signal strength is 5 db less when XMTR is selected. I have tried different types of injection cables, went through a careful alignment of both radios (while both were connected together) and still there is no uniformity between the bands in received signal strengths when switching between RCVR and XMTR. Why is this? Any suggestions on how to obtain uniformity in received signal strengths on all bands when switching between RCVR and XMTR via T4X-C "transceive" switch? 73, Chuck Pool - AA5WG ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Mixer and RF amp mods
Hi to all: Does anyone know of successful mixer and RF amp mods for the R4C? Thank you. Chuck Pool - AA5WG Cedar, Michigan ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] High Performance Mixers for Drake R4-C
Hi to all the Drake Fans: Can anyone recommend replacement high performance mixers for the late model Drake R4-C, serial number 27k+? Characteristics of Mixers desired: (1) Double Balanced Mixer or (2) Two doubly balanced mixers phased together (3) Hard Swithching Mixer (4) Voltage method of multiplication Thank you for all: 73, Chuck Pool - AA5WG Cedar, Michigan ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] (no subject)
Hi to all: This is a T4X-C question. I have a C-Line and I am giving the T-4XC an alignment (R-4C too). (1) 80 meters challenge: 80 meters has lower output than all the other bands. I noticed three of the four alignment trimmer capacitors on the left side of radio (T-4XC) are cranked tight as can be. The trimmer/alignment capacitor closest to front of radio seems normal. It is not cranked tight. With the other tree trimmers it as if one cannot reduce capacitance enough to raise the output power. When I finally got these three trimmers unstuck, from being over tighten, the power output went down to effectively nothing. I cannot get any power out unless these three timmer capacitors are over tightened. This is not correct. Any ideas what I can do to fix this? 73, Chuck - AA5WG Cedar, Michigan ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
