This allowed the exciter to have a much wider matching range, and the lack of a tuned input circuit in the mla2500 did not cause a problem. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. This is a new reprint of the original dentron mal 2500 instruction manual. Pm2500 replacement power supply module for mla2500.
The dentron dtr 2000l linear amplifier is a conservatively designed 2000 watt pep 160 15 meter amplifier of unique design. Dentron mla2500gi7b tuned input by n3oc overview the dentron mla2500 linear amplifier was designed in produced in an era when the exciter that was attached to it contained tube finals. In addition, i have made a few changes that may be helpful to others going down this same road. We will test and describe to the best of our ability. Because of the buyer protection policy i am adding this to all listings.
Dentron mla2500 gi7b conversion based on w4zt, w4emf. We furnish utter variant of this book in djvu, epub, doc, pdf, txt formats. The final test of a linear amplifier is not just how much power it will put out, but how clean is the out put. Im trying to maximize what i can do with my available greenstamps.
I was looking for a cabinet to house a homebrew gi7b amp that i was moving from rack mount to table top. If you want to witty books, lots of novels, tale, jokes, and more fictions collections are as well page 119. The used a quad of sweep tubes to produce about a watts input while the clipperton l uses four 572b tubes. Dentron dtr2000l dtr 2000 l dtr2000l service manual and specs dentron gla gla gla service manual and specs dentron glab gla b glab service manual and specs dentron mla2500 mla 2500 mla2500 service manual and specs dentron 16010l 160 10 l 16010l service manual and specs. Although the greatest care has been taken while compiling these documents, we cannot guarantee that the instructions will work on every amp presented. Dentron dtr2000l download your lost manuals for free. Hammarlund heathkit henry radio hys i0jxx itb juma klm kohjinsha kris kuhne electronic k. If you have recently purchased your mla 2500 or mla 2500b, you will want to check out the power supply portion so that you know the starting point. Download file pdf dentron at 1k manual dentron at 1k manual if you ally habit such a referred dentron at 1k manual ebook that will have enough money you worth, get the very best seller from us currently from several preferred authors. Dentron mt3000a manuals and user guides, tuner manuals. If you are searching for a book dentron tuner manual in pdf format, in that case you come on to right site.
It features redesigned rectifiertimer and filter capacitor pc boards, new modern 220. Service and user manual dentron dtr2000l amplifier. I will be listing lots of items from this collection. To open downloaded files you need acrobat reader or similar pdf reader program. Dentron dtr2000l linear amplifier 8877 3cx1500a7 tube alpha 4510 wattmeter duration. Dentron clipperton l conversion to gi7b tubes and other modifications pat griffin aa4pg walking out of dayton, 2014 my eye caught a beat up clipperton cabinet under a vendor table. Manual covers ring protective dentron instruction mla2500 bound 27. This original dentron amplifier design has the same shortcoming as the original alpha deisgns of the period using this family of eimac tubes no grid overcurrent protection.
Comb binding protective plastic covers front and back. However, this grid protection can be added as part of the upgradetube change. Operating manual dentron glab linear amplifier used. The dentron glab linear amplifier l lnears using tvtypesweep tubes. Most items are vintage, used and further testing, alignment and repairs may be needed. The mla 2500 is probably the worlds most converted amplifier, since the tubes were never made by more than one vendor. Easy dentron mla2500 conversion using svetlana 3cx400a7. Operating manual dentron glab linear amplifier usedthis is part of a ham radio collection i purchased. The dentron mla2500 and mla2500b used the eimac 8875 ceramic triode.
Dentron mla2500 gi7b modification procedure by n3oc february 20 overview this document provides some additional detail and a few corrections to the excellent conversion information by w4zt sk and w4emf. When tested with 40 watts drive on ssb the unit produced just over watts. By modifying this amp were minimal changes to the original design and as far as possible minor initial components used. The dentron mla2500 amp is a very good amplifier to retrofit using the gi7b tubes. By and large this one follows the steps outlined by w4zt, w4emf, and k4poz and their work is gratefully acknowledged. The manual indicates that around 65 watts pep will produce approx 2000 watts pep out. If one abuses the linear obviously one can harm it since the only protective device it incorporates is an a. There is an sb220 and a pride dx300 without the kw1 suffix. When eimac dropped the 8875 from their catalog, that was it. Amplifier dentron mla 2500 operating manual 18 pages. Someone may know exactly, but my information is that close to probably 6000 were. With the ldg tuner i measured 350 watts output when driven by an icom ic718 at 65 watts. When i replaced the ldg tuner with the mfj manual tuner i was able to fine tune the amplifier input so that i got about 420 watts output for 65 watts in.
Our ham radio items are from local estates and collections. Dentron dtr2000l dtr 2000 l dtr2000l power amplifier. Dentron dealer brochure amplifiers tuners antenna data. As designed these are the design specs for the dentron clipperton l. Amplifier dentron mla 2500 operating manual 19 pages related products for dentron gla. Ameritron is kind to amateur radio homebrewers by selling parts used in their products, but please do your homework before calling and wasting their time. Database contains 1 dentron mt3000a manuals available for free online viewing or downloading in pdf. F 450vdc electrolytic capacitors, piv 3a diodes, new 100k. Only way to get big air without noise is a big blower. This site helps you to save the earth from electronic waste. The pictures are of the my older model 80, 40, 20 and 15 m dentron gla plane, no tuned input hf linear amplifier.
Since both of these amplifier are long in the tooth, their power supplies have worn out. Converting a dentron mla 2500 to operate with 4cx400aa svetlana. Dentron clipperton l conversion to gi7b tubes and other. The incorporation of a single 8877 a tube till now used almost.
Difference between dentron mla2500 2500b qrz forums. In the future, as demand for the 8875 increases and availability decreases, the savings may be more. Small orders like this are not profitable for them. The dentron mla 2500 is clean if the transmitter used to drive it is clean. This is especially true in tight of the new fcc regulations concerning spurious emissions. We make lots of contacts and make notes of the reports tx and rx. Dentron mla 2500 gi7b conversion based on w4zt, w4emf, k4poz conversions this is yet one more dentron mla 2500 conversion. Converting a dentron mla 2500 to operate with 4cx400aa. Sort by popularity sort by average rating sort by latest sort by price. I am very happy with this rebuilt gla amplifier and the experience was rewarding. Bob alper, w6kt article as first appeared in communications quarterly magazine, summer 1996 modification allows for economical tube substitution there are many dentron mla2500s out in the world.
Dentron mla2500 4cx800 signature series amateur radio dust cover. Johnson emperor emtron etoalpha falcon telecom frontier electric co. The 8875 is not produced anymore, and therefore very hard to obtain. Dentron mla2500 manual the mla2500 is a good quality ssb linear amplifier with 600 watts total plate dissipation and a 1kw dc ccs input rating, covering the traditional ham bands from 160 to 10 meters plus a bit extra for mars. Service manuals, schematics, eproms for electrical technicians. Dentron clipperton l 160m 10m amplifier restoration. Worlds leading amateur radio web site with news, technical articles, discussions, practice exams and more.
Copy of operating manual dentron glab linear amplifier used. I have done two of these so far, and learn a little more each time. Two of the most popular were the dentron clipperton l and the dentron gla b. Dentron mla2500 gi7b conversion based on w4zt, w4emf, k4poz conversions this is yet one more dentron mla2500 conversion. Tube amp for 11 meters page 3 worldwidedx radio forum. The dentron mla 2500 and mla 2500b used the eimac 8875 ceramic triode.
User manuals, guides and specifications for your dentron mt3000a tuner. An mfj212 antenna tuner adjustment noise bridge works nicely with any tuner. Dentron mla2500 manual the mla 2500 is a good quality ssb linear amplifier with 600 watts total plate dissipation and a 1kw dc ccs input rating, covering the traditional ham bands from 160 to 10 meters plus a bit extra for mars. Dentron mla2500b linear amplifier this amplifier is a compact desktop 2000watts pep, amateur radio 1. This retrofit requires some metal cutting and moving of the rf sampling board and antenna relay. Through years of designing linear amplifiers, dentron radio has greatly simplified the circuitry of the dtr2000l, building in years of reliability based on the experience of our worldfamous mla2500 series. Second hand dentron mla2500b 2kw hf amplifier radioworld.
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