User manual for the trasnceiver drake model tr4c ham radio. Drake equipment needs a pushtotalk switch to operate, even in cw. I start to tune up i get sparking off the back of the plate tuning capicitor, the plate voltage refuses to dip and i hear a rapid clicking sound and a rapid jumping of the plate amp meter. I got also a manual copy in spanish and some spare tubes, including a final set. The selected page will appear in this section of the screen. This page is devoted to the repair of my second drake tr4c transceiver. Im not too sure about this as i moved the ptt to an rca jack on the rear apron years ago. I recently bought a drake tr4c rv4c ac4 station which came from an estate. These came in several versions from the tr4 to the tr4cw rit. Note that there is a limit to the number of files you can download.
High resolution color photographs of underchassis with all parts annotated and keyed to a complete parts list. View and download drake r4c instruction manual online. Drake banking department drake tax users manual 12 tax year 2019 drake banking department contact information for drake softwares banking department. It has the matching ms4 speaker which also houses the ac4 power supply. Be aware that the file is about 15mb, very large, so will take a long time to download, depending. You can also click here to see all the manufactories that mods. Having a small problem with a tr4c and was hoping someone could send me in the right direction. Tr4 manual trivia the front cover of the manual depicts the 2 crystal filters in the radio showing the skirt selectivity and bandwidth.
Rytr4ct4xc replacement tr relay harbach electronics, llc. The r l drake model l4b linear amplifier offers continuous 2000 watts pep ssb, and watt dc, c w, am and rtty operation covering the ham bands 80 through 10 meters. The drake tr4c is an hf amateur band transceiver covering 160 through 10 meters in seven 600 khz ranges. Increase if gain the tr4cw had 1 pf capacitors across the if transformer hot side t11 and t12 to increase the if gain. Users manual about your drake software users manual tax year 20 5 1 introduction thank you for choosing drake software. Be prepared and able to communicate in case of emergency with the largest selection at. Taking time now to familiarize yourself with the drake drake software. These manuals are available for download and free of charge.
The l4b uses two 3500z or two 88023500z or two 8163 or two 3400z zero bias. Drake service supplement cds provide the information that drake left out of the original documentation. The tr 4c features a highstability linear permeability tuned vfo and two 8 pole. After i rebuilt the power supply and replaced a couple of tubes, the station is operational with the exception that. Visit us online for more information or to download owners manuals today.
Drake tr4c transceiver and ms4 speakerpower supply parts. Service manuals, schematics, eproms for electrical technicians. Select pages by clicking on the individual page number or manual section from the menu on the left. Toshiba 2sc2879 transistor datasheet pdf macom mrf421 transistor datasheet pdf. Drake tr4c sm service manual download, schematics, eeprom. You can download the manual for a drake tr4 transceiver from here. Unit as received as you will see, this tr4c was in somewhat sad condition, mainly very dirty. Drake tr4c transceiver and ms4 speakerpower supply.
The manual outlines a simple procedure for setting this delay to other than factory default. To open downloaded files you need acrobat reader or similar pdf reader program. Franklin, nc 28734 phone 828 5248020 fax 828 3495745. Drake tr4 transceiver manual 011903 manual display page. The rear panel has antenna and io jacks as does the rear panel of the speakerpower supply. I have done several tr4s and i recommend changing the paper caps, restuffing the can, changing out the other electrolytics, the 2 ohm meter shunt, the 15 ohm finals cathode resistors, and the 68 ohm finals screen resistors.
I got it in unworking condition, with a homebrewed ac4 power supply clone. I recently purchased the radio and used it to make over 70 contactsbut now, suddenly, a problem has developed. The gear is nice and clean and appears to be 100% stock. The front panel is about an 8, with a couple of small scratches. Antique radio forums view topic drake tr4c on 11mtrs. Tr4 later version manaual, tr4 with the noise blanker. If you want to see manuals from other manufactories you can click on the manufactory menu in the left side. Available accessories include an rv4c remote vfo, a matching ms4 speaker, an ff1 fixed frequency adapter, a 34pnb noise blanker, 12. Drake, drake ham radio, drake radio, drake tr7, drake tr7, drake tr4, drake mn2700, drale l4b, drake l7, drake manual, drake rv4. It is being sold to raise money for the northeastern university wireless club, w1kbn. The unraveling of drakes tr4 series ssb filter scheme, by jeff covelli wa8saj. R l drake service information not provided by drake. Drake, drake ham radio, drake radio, drake tr7, drake tr7, drake tr4.
The tr4c was very dirty internally, but cleaned up very well and chassis is in an 8. Mic and headphone jacks are on the right side panel with photocopy of owners manual. I am now accepting new manuals for inclusion in this archive. The ptt contacts are part of the mic jack, i think the ptt is the tip of the plug, the audio is the ring, and common is the sleeve. Covers 80 meters to 10 meters with no drake tr 4c manual pdf. Refer to the tuneup proced ure in the i ranseelver or transmitter manual caution do ship the 4 mounted cabinet serious damage to tilf cabin ft may result in l r \ nsit input. You must not be tampered with but must be kept original,often has to be clean inside and out,and must be aligned according to the owners manual. The ac power supply is built in and there is provision for an external. Cover contents pg01 pg02 introduction pg03 pg04 pg. If you have some stuff that not is listed here you can donate this by contact mods. We checked it out as far as seemed reasonable and concluded that it needs to be recapped. The drake team has been hard at work throughout 20 to help ensure that your firm has a successful, rewarding filing season in 2014. Tr4 early version manual, tr4 without the noise blanker.
I have cleaned the original relay in several tr4cs without success, tom. All frequencies 305 to 30 mhz may be covered with some re alteration of the input circuit. The drake tr4c is an hf amateur band transceiver covering 80 through 10 meters some sources say 16010 m in seven 600 khz ranges. Power supply, model 1502 fixed station operation of the tr. Drake tr4c transceiver and ms4 speakerpower supply parts or repair only.
The tr4c is friendly,fun,powerful,smart,always ready to be adjusted for best performance,and also young. The drake team has been working hard throughout 2014 to help ensure that your firm has a successful, rewarding filing season in 2015. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. Drake tr4, drake tr4c, drake tr4cw universal radio. Drake mods tr4 modstechnical authored by ve3efj tom taylor, n7tm 9. Set the trimmer nb threshold as described in the r4 manual turn until the nb attenuates the signal. The manual was written in by drake and applied to tr4c. Drake company warrants to the original purchaser that this product shall be free from defects in material except tubes and rf output transistors or. The second page of the transceiver schematic is a little messed up.
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