R4, r4a, r4b or r4c receiver, ruin a cable from the ini jack. Each of the modifications are discussed next in the order they were performed. The r4b rear panel and t4xb rear panel and chassis are gorgeous. This link is listed in our web site directory since monday nov 11 20, and till today drake r4 manual has been followed for a total of 175 times. Drake convinced a young engineer, mike elliott, to. About drake r4b modifications the resource is currently listed in in a single category.
All frequencies 305 to 30 mhz may be covered with some re alteration of the input circuit. This page uses frames, but your browser doesnt support them. Toshiba 2sc2879 transistor datasheet pdf macom mrf421 transistor datasheet. Set the trimmer nb threshold as described in the r4 manual turn until the nb attenuates the signal. One of the key features of this receiver is the use of a linear, permeabilitytuned local oscillator that provides fairly good dial calibration to the nearest kilohertz and can be guesstimated closer than that. Drake r4b sw 1,530mhz receiver sm service manual download. Drake r4b receiver category is a curation of 4 web resources on, drake r4b modifications, drake r4b manual, drake r4 manual. However, i suspect they were all fine prior to shipment. Select pages by clicking on the individual page number or manual section from the menu on the left. The l4b uses two 3500z or two 88023500z or two 8163 or two 3400z zero bias.
About drake r4 manual the resource is currently listed in in a single category. I still use the yaesu for digital work and an icom for for mobile. With original owners manuals but no box, tr switch or mic. View online or download drake r4b instruction manual. Drake company produced the r4b as a refinement of their previous popular r4 and r4a models. Drake, drake ham radio, drake radio, drake tr7, drake tr7, drake tr4, drake mn2700, drale l4b, drake l7, drake manual, drake rv4. Drake r4b manual related links we thought you might also be interested in these additional web sites, selected from the same category. Drake s first all solid state transceiver, the tr7 in 1977 the development of the tr7 transceiver was the first attempt of the drake engineers, basically tube guys, switching to all solid state, went through a lot of paintaking trial and errors. The b series has built in a number of items that were options on the r4c. Egg, i reexamined the manual you posted and noticed it is for anr4c. This manual provides sufficient information for operation of the t4xc. So far no one has rated yet, so be the first to rate this link. Can capacitors and recap kits for drake hayseed hamfest llc. The guidelines that follow are not meant to discourage collection, repair, restoration and operation of this gear but rather to point out some of the possible pitfalls and areas of frustration that.
As received the agc, s meter and notch were not functional. About drake r4b manual the resource is currently listed in in a single category. The reflector is a vehicle for sending a receiving email messages to the. I am now accepting new manuals for inclusion in this archive.
Drake enthusiasts generally prefer the b series receiver. Before getting into my most recent drake equipment acquisition and repair, a few comments about owning and operating older vacuumtube radio equipment are in order for those who have never tried it. Hayseed hamfest supplies brand new multisection can capacitors and discrete capacitor replacement kits for drake gear. Digital frequency synthetizer for r4b r4c keywords. Quad filter capacitors are scarce or no longer available, and the available space below the r4b chassis rules out using. Linkbacks, doublechecks, and lookback, new forms, new screens, and new worksheets, new partnership k1 allocations, enhanced email setup, footers for letters and. The selected page will appear in this section of the screen. The unit was packed very well and arrived in perfect cosmetic condition. We are closely monitoring the covid19 situation and taking steps to protect our customers and employees. The push it button is a manual trigger that lets you play a specific note or. All manuals include schematics unless otherwise noted. Technical information exchange drake parts, materials. Technical data, operating and service manuals provided by myself and other hams covering various technical subjects, amateur radio receivers, transmitters, transceivers and accessories. May, 2011 drake r8a vintage ham radio shortwave receiver demo the best n6tlu duration.
Cover contents page 1 page 2 page 3 specifications. The schematic for the r4b does show a gnd connection at the back but it is easy to overlook. These manuals are available for download and free of charge. Drake l4b sm service manual download, schematics, eeprom. The main category is drake r4b reciever that is about drake r4b receiver. Get the best from your r4b modifications for the drake r4b receiver in a single pdf file. To open downloaded files you need acrobat reader or similar pdf reader program. About your drake software users manual the drake software users manual has been developed for drake customers to provide clear, uptodate, easytofind instructions and guidelines for using the software. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. Soundeditor provides the ultimate editing and sound development experience by displaying all mopho program parameters in a single, intuitive. Webmaster, add a remote rating drake r4b manual related links we thought you might also be interested in these additional web sites, selected.
Back to drake next receiver last modified 20170814. But when i want to sit down and give my ears a treat, i choose the drake. Later model r4c used a 14 volt power supply by changing the power transformer. Pdf any additional info b about this or some comments and observation about facebook beta s integration to people hub. Drake software users manual about your drake software users manual tax year 2015 5 1 introduction drake software has some exciting changes and additions for the 2015 tax season. Second, put a 100 nf capacitor in parallel to r19, cathode resistor of v4, this will. All manuals are copies and are madetoorder unless otherwise noted. Service manuals, schematics, eproms for electrical technicians. If you have some stuff that not is listed here you can donate this by contact mods. Drake mods by ve3efj r4b and r4c mods r4c mods by sm6prz dayton 2004 dayton 2 dayton. First try to have your r4b at its original specifications.
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. View and download drake t4xb instruction manual online. While there is a drake fix for this, the best option is to use an ic audio amp and fix the 12 volt regulator. To open downloaded files you need acrobat reader or similar pdf. Antique radio forums view topic ground on drake r4b. I compared it to the r4b manual i was using the r4b manual does not have a section 2. This link is listed in our web site directory since monday nov 18 20, and till today drake r4b manual has been followed for a total of 341 times. After some research i decided to buy a set formerly owned by k2lwr. Drake, drake ham radio, drake radio, drake tr7, drake tr7. Mopho is a compact and affordablebut powerfulmonophonic analog synthesizer. Prova di laboratorio di rinaldo briatta i1uw avetelettobene,noneuner rore. Daniel, w6spc, has a great idea for replacing electrolytic filter capacitors on the drake r4b receiver especially pertinent now that drake is phasing out servicing for its older gear and parts are becoming less availableed. Be prepared and able to communicate in case of emergency with the largest selection at. When you buy an r4b, there is not much else to get everything is there that you need noise blanker, calibrator and 4 selectivity settings.
Second, put a 100 nf capacitor in parallel to r19, cathode resistor of v4, this will increase the gain and the effectiveness of the avc. Excellent suggestions from the drake users group pointed to q4 as a possible fault. Drake r4b amateur receiver, drake r4b universal radio. View and download drake r4b instruction manual online. After opening the box and setting up the receiver i decided yes the drake r4b receiver has a unique quality that makes you think wow. The early model supplies could fall out of low limit spec with marginal 110 vac. Drake r8a vintage ham radio shortwave receiver demo the best n6tlu duration. Back to drake next receiver last modified 20170814 drake r4b specifications. It is also possible to increase the first mixer gain by reducing the resistance of the cathode resistor from 2. This link is listed in our web site directory since tuesday nov 12 20, and till today drake r4b modifications has been followed for a total of 353 times.