Drake l4b modifications

Author: bjel

August undefined, 2024

WebIMO the L4B has the best and the heaviest duty RF deck of any HAM amp of that era. The weak spot is the PS. I recently acquired another L4B RF deck only. I homebrewed a 4KV … WebParts & Upgrade Kits for R. L. Drake Amateur Radio Equipment. Customer matched zone "Locations not covered by your other zones" Showing all 14 results. RY-TR7 Replacement T/R Relay $ 40.00 Add to cart; ES4L4-B Soft-Start/Soft-Key/Bias Module $ 90.00 Add to cart; RA-VOX2RCA $ 6.50 Add to cart; RA-160 T4X/B Plug-In Relay Adapter Kit ...

L-4B -> Modification of the tube cooling on Drake L4B - mods.dk

http://www.redwaveradio.com/4_c77123d179f95fc0_1.htm WebMar 11, 2024 · Joe Wolfe. Mar 10 #38286. Russ, you might get better responses to your question over on the DRAKE-RADIO group. L-4B andal7 amplifiers are always discussed with lots of mods for unobainium parts, etc. Joe – W7RKN. From: [email protected] [mailto:[email protected]] On Behalf Of hrd998cc via groups.io. public policy jobs in south africa

mods.dk - Articles for Drake

WebJan 6, 2012 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... WebSep 21, 1997 · My post of an L4B brought some inqueries about the bias mod, so I'll provide it here. The method is from the ARRL Handbook, the Heath SB-220, and Drake folklore. … http://www.w8zr.net/vintage/amplifiers/Drake%20L4B%20Modification/Drake%20L-4B%20Modification.htm public policy in the platform society

Manual Display Page

http://www.wb4hfn.com/DRAKE/DrakeArticles/L4B-Fan/Drake%20Fan%20Replacement.pdf http://www.wb4hfn.com/DRAKE/DrakeArticles/L4B-AIO/L4B-AIO-01.htm public policy is similar to rules or lawWebMy rebuilt supply for the Drake L4B. 330MFD 450 volt Caps from All Electronics Corp. and K2AW Rectifiers. The 2 Watt resistors remained in the original place. Search help: Support (FAQ) ... If you have trouble when you are using mods.dk, then look at the support pages. Drake Menu: Manuals: Pictures: 2-a: 2-b: l-4b: l-7: r-4b: r-4c: r-7: r-8b ... public policy issue meaning

"Web"Export Model" Drake L4B Modified by WF5I Dr. Thom McLees W5FV (ex WF5I) did this modification years ago. The tubes are 4CX1500Bs in grounded grid (!). "Export Model" Drake L4B Right hand view. Notice the … " - Drake l4b modifications

Drake l4b modifications

Drake L4B from 1978 or new Ameritron 80B?? - WorldwideDX …

http://www.wb4hfn.com/DRAKE/DrakeArticles/L4B-AIO/L4B-AIO-08.htm WebThere are still existing only a few devices produced in the `70s, which are successfully used by radio amateurs till today. One of them the L-4B. In the course

Did you know?

WebModification of the tube cooling on Drake L4B: 20 Feb 2006: Rebuilt Drake L4B Power Supply: 06 Jan 2003: Reduce heat in L-4B P.S. 01 Dec 2002: Reduce heat in RF deck … WebFeb 14, 2024 · drake l4b-7-sp and l7 ps 1170 vac secondary with 7 terminal pri - note: requires power supply and rf amp mods: pwdp13054: ei-212 x 3: 2: 120/240 vac 60 hz 1ph hi-lo taps: s1) 1170/878 vac @ 0.81a ccs: 29

WebAmateur Amplifiers. The Drake L-4B has 1000 watts PEP power input on AM, CW and RTTY and 2000 watts input on SSB. It covers 80, 40, 20, 15 and 10 meters (10 meters not available on late production). The high efficiency Class B Grounded Grid Circuit uses the new Eimac 3-500Z zero bias triodes. Power requirements are 115 VAC 50-60 Hz 30 … http://www.wb4hfn.com/DRAKE/DrakeArticles/L4B-AIO/L4B-AIO-06.htm

WebLes meilleures offres pour Amplificateur linéaire rare Drake L-4B vendu non testé, nous livrons *GRATUIT* dans le monde entier sont sur eBay Comparez les prix et les spécificités des produits neufs et d'occasion Pleins d'articles en livraison gratuite! Web2007-09-10. Strong Solid Performer. Time Owned: more than 12 months. I have been using my L7 for years and it continues to be a strong, solid performer. The 3-500 pair is a great set of tubes and the design of the amplifier is classic and hard to improve upon. I have installed a couple mods that I feel are helpful.

WebBuilding a high voltage power supply on the L4B chassis is a real challenge because of the lack of space. First you need to determine where and how to place the large high voltage …

WebHere I show the repair and modifications on a Drake l4b EnjoyAir variable is short for air variable capacitor. public policy leadership program telferWebDec 6, 2009 · 173. Oklahoma. Nov 19, 2007. #2. They are nice amplifiers. The 'L4-B' is a typical two tube 3-500 amplifier. Does about like any other 3-500 amplifier of the same period. Output depends more on the tubes than anything else, new/used/how used, sort of thingy. That '1200w Pep' is with SSB, expect something about half that or less for AM/FM. public policy literature review examplehttp://www.radiojim.exofire.net/pages/Glitch%20diodes.html public policy issues 2023WebDrake L4/L4B Blower Fan Repair/ Upgrade. By: Gene McCalmont, W5DDW. After 30 or more years of service the L4B blower fan is starting to develop many issues due to age and deterioration. Until recently there … public policy kraft 6th edition public policy in the united statesWebdrake l4b 3cx1200a7 x 2 fil - note: requires extensive power supply and rf amp mods fil xfmr for 2 ea 3cx1200a7's in l4b pwdf13243: ei-150 x 2.5" 29gm6x 4 0-120/0-62-120 vac … public policy major gettysburg collegeWebDrake L-4B SPECIFICATIONS. Type: Amateur HF linear amplifier: Frequency range: 10-80 m: Output power: AM/CW/RTTY: 700 W SSB: 1 KW (PEP) Drive power: AM/CW/RTTY: … public policy littering