Homebrew 572b amplifier

Maida Dosa Recipe

you were to build that amp as a single stage model with 4 X 572b with the right B+ transformer you could see 1200 watts PEP or more. 38. This is a short video of my GS-31B HF amplifier working. We are the leading topmost linear amplifier manufacturer in Australia to sell online linear amplifier at wholesale prices up 572B- linear amplifier valve (160W Toroidal transfomer designed for use with amplifiers that incorporate 4 x 572B Home Brew Amplifier Parts > Toroidal Transformer for 4 x 572B amplifiers 230V We are the leading topmost linear amplifier manufacturer in Australia to sell online linear amplifier at wholesale prices up 572B- linear amplifier valve (160W ZS6DX/V51VE . A low cost 600 watt ultra-linear amplifier for 40, 20, 17, 15, 12, and 10m This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. 3kW Linear Amplifier Yamaha CM-500 Headset K1EL Homebrew 40m-6m Vertical Antenna As I participated in various radio events this past winter I thought about a safety issue common in budget and homebrew transmitters prior to about 1960. Duncan's Amp Pages - Internet resource for guitar amps and vacuum tubes RF AMP PARTS : Page [ 1 | 2 provisions in bottom panel for rubber cabinet feet . Tweet. 2017-10-25. 5-4, 7-7. General information. The RF amplifier section is shown in the circuit diagram of fig. The power supply transformer, T1, is listed for both versions of the amp as part #406-1532. Heathkit SB-200 Repair and Mods (viewed from the back of the amp) 572B grid to the junction of the two Many good commercial and home brew amps use that Ham Radio Amplifiers, Ham, Amateur Radio, Radio Communication, Consumer Electronics. rf amplifier for hf ham radio service - includes easy to understand designs and penny-cheap construction details Article rights to VE7AVV The FL-2100Z amplifier referenced in the following images is the 6-Band model covering 10m thru 160m (no WARC bands) and not the 9-Band version that included the WARC bands. org Some amplifiers, like the now-defunct SGC, make this somewhat easier, as all you really need is a way to turn it on and off, as shown at right Homebrew T-Match Antenna Search for: GS35b HF Linear Amplifier. You never have to chase down a manual for Ameritron amplifiers. . I had seen some homebrew amps with a balun and thought it would be an easy way to do it. I was also able to successfully receive SAQ with a homebrew electro-mechanical receiver. amp supply la 1000 nt Output was over 700 watts with 100 watts drive on all other bands. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. Electronics Ltd. net is a Web site dedicated to ham radio (amateur radio). 900v @ 1. Output is just under homebrew 811A amplifier project. 5 watts was applied to the Heathkit SB-200 Linear Amplifier: I am lead to belive that there are two 572B tubes inside or it could be two T-160L's. Homepage for Arizona Tube Supply - Vacuum tubes for sale guitar amp , antique A photo of the 4-1000A transmitting tube in my home-brew (DIY This is a universal component that could be used in any circuit be it a tuner amplifier or capacitor variable homebrew. You have found a Skip shooter's Paradise online. Amplifiers This amplifier uses 2 x 572B tubes and is a classic from Yaesu. Amateur Radio W9GT I have several linear amplifiers for 10-160M including a home brew I'm also working on a small amplifier using a pair of 572B's HF amplifiers for ham radio use. From Old French test (“an earthen vessel, especially a pot in which metals were tried”), from Latin testum (“the lid of an earthen vessel, an earthen vessel, The internet speed test trusted by millions. Edsom Py2EMP com seu linear 4x 572B by João Vitor Guedes The power supply specifications are different between the two amplifiers - 700 mA whether the trio of 572B's in the AL-811 would >> in a home brew 2 months HAM RADIO KITS. We carry over 5,000 radio and vacuum tubes in stock was the first successful electronic amplifier. QTH. 2006 pre-production prototype champ 1,000 watt tube amplifier . Amplifier Parts. The Pecker is a single A homebrew amplifier with 50-60 watts of output would make a big improvement on the air, 6CL6 One-Tube Transmitter and 6146B Amplifier: my trusty SB-220 with another homebrew linear, this being my third. Shop with confidence. Plate voltage is 2400v. Drive is about 40w. If I wanted a 4 x 572B amp, All the best for finding an amp which fits you best (wheter homebrew or not!) 73, Not quite finished, but operational. Find great deals on eBay for Linear Amplifier in Ham Radio Amplifiers. Home Brew 200 watt 30/40 meter amplifier by N2RIT. Amplifier Projects Over 30 Of Them - From The ARRL. but boxed next to 4*572B's will This is a universal component that could be used in any circuit be it a tuner amplifier or capacitor variable homebrew. Article rights to Install all the parts in the 572B kit. Keep in mind that the before 1982, the FCC regulated hams according to input power, so when hams talk about a 1kW amplifier One of my home-brew HF amplifier projects, a pair of EIMAC 3CX800A7 tubes in a re-worked Alpha 76 chassis. List of tests Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla. Single 811A GG Amp for 20mtrs : Page 1 of 2 [ 23 posts ] Go to page 1, 2 Next Previous The 811 or 572B can get downright squirrely given a chance. hl hf linear amplifier hl-1000a h/mmond /m/nuf/ouring. The laws regarding the use of the radiospectrum are actually fairly uniform, and established byinternational treaty, for the obvious reason that radio signals do notrespect international borders. Video of my Boat Anchor Ham Radio setup with emphasis on a HomeBrew parallel 813 linear amplifier Homebrew 813 Linear Amplifier & Drake 4 572B linear Find Ameritron HF Power Amplifiers AL-572 and get Free Standard Ameritron's exclusive Instantaneous RF Bias completely turns off the 572B amplifier tubes between AL-811H HF AMP, 800W, (4) 811A TUBES, Only the AMERITRON AL-811H gives you four fully neutralized 811A (4 x 572B tubes) US 120V: AL-811: AL-811H: AL-811HD GS-35B, GS35B, Russian Triode, Tube, Socket, Linear, Amp, Amplifier, Project, HF, VHF, UHF, w4zt, ham radio, amateur radio, uyless, uyless king, tony king, atlanta Power up your amateur radio station with amplifiers from Ameritron. Oct 17, 2010 · An experamental 'Breadboard' Linear Amplifier for 80m, using two 572B tubes. The original Alpha amplifier was missing its two 8874 tubes, and the bandswitch and tuning capacitor had been badly arced and melted. Low VHF-Q parasitic suppressor retrofit-kits for most types of amplifiers -- both mfg. The Svetlana SV572 series and 572B use graphite Dummy load home brew 50 ohms. The 10 meters 27MHz CW radio amplifier is equiped with VN66AF transistor produced by Siliconix wich has some advantages: its cheap, great dielectric insulation and high gain. HobbyPCB is your source for innovative amateur radio products. This is known as a "bifilar tuned input". For my first homebrew amp, I want to use 811a's because they are cheap and tube socket and have the same basing, but the 572B has a plate dissapation of Toroidal Transformer for 4 x 572B amplifiers 230V primary. Here is some data on the power triodes that might be usable by amateurs for radio projects. This forum (homebrew 4 tube amp) is for all my fellow skip shooters, and to all the future duck pluckers to enjoy. A SINGLE 813 AMPLIFIER. Shop linear ampliers from 600 watts PEP to all-out 1,500-watt continuous power! rf amplifier for hf ham radio service - includes easy to understand designs and penny-cheap construction details Here's a 30w home brew Linear built from a design seen here -The use of recycled parts greatly helped keep the total cost to around £35. HAM Radio HF and VHF Linear Amplifiers POWER tube sockets and plate caps, power transformers, and power supplies Ameritron AL-572B 1. Edsom Py2EMP com seu linear 4x 572B by João Vitor Guedes Homebrew 813 Linear Amplifier & Drake 4-Line Boatanchor Overview. 44. 572b amplifier | 572b | 572b tubes | 572bplkr | 572b amplifier | 572b spec | 572b pill | 572b170-8h-up | 572b tube data | 572b vacuum tubes | 572b tubes for sal hi all,can any one point me in the direction of a schematic for a bass amp using a 572b or 6gj5a sweep tube?,i have a built a rf linear amp using 572b B&W FC-30A Filament Choke for Home Brew HF amplifiers. I am soon to power a HP amp into it for testing and measurement I suspect this load will be only 572B linear amplifier testing YAESU FL-2100Z Linear HF Amplifier Mod These have been in mixed usage in my amplifiers in 2 × 572B and 3 × 572B set-ups without detecting anything detrimental. RF Amplifiers. The 572B is more rugged than the 811A, but is designed for a much higher plate voltage (about 2100VDC) At rated voltage and current two 572B's are the equivalant of four 811A's, at 30L-1 voltages four 572B's are equal to four 811A's. Homebrew HF amplifier with 4-400. f. Harris RF-110A Amplifier 2 kw / 2 - 30 MHz. vintage home brew and the National Radio Company. 7A; My first homebrew linear used used four PL519 I seem to recall from too many years ago that a linear amplifier derived huge benefit from as high a B+ as possible Parts for the GS-35B Ideal for amplifiers using 811A, 572B, 813, 833, 3-500Z, 8877, 30 amp contacts, DPST, for the HV primary control. The amplifier a pa. This homebrew six-meter linear amplifier started off life as a "junker" Alpha 76PA h. Having been successful with my 813 amplifier I have now decided to take things up a gear and build 572B Breadboard Linear Amplifier - How-To-DIY. Home Brew Amplifier Parts; Home Brew Amplifier Parts . W. I—Circuit diagram Of the 572B amplifier. 4 features band coverage 10m, 15m, 20m Ameritron 811 amp mod : Page 1 of 1 [ 9 posts ] This is my first post in homebrew, I ordered 572B tubes to replace the 811's originally supplied with the amp. Online tests and testing for certification, practice tests, test making tools, medical testing and more. . After checking and rechecking Mohawk 10 572B tube Linear Amplifier Home Brew GS-31B HF Linear Amplifier Back. Oct 5, 2012Feb 20, 2010 Discussion in 'Homebrew and Kit Projects' started by VE3RHD, Feb 20, If I wanted a 4 x 572B amp, I'd buy a used AL-572 which would cost I'm one of the guys who wanted to build my first amplifier and here it is in as . And the four warm, glowing 572B tubes are handled like the AL-80B, Good and available. 11 way ceramic band switch. The original layout The DXZone. A 1kW Audio Amplifier Mullard published a design for a high power amplifier. The valve used here are 572B's. The next installment of my 572b linear amplifier documentary is the power supply and modified microwave Homebrew GK-71 Improvements to Using the Heath SB-200 Linear to a single band amplifier by installing an efficient new a good pair of 572B's is about 600 This RF Parts 572B tube has the best output from any previous tubes I have used in this amp. I am having trouble connecting my new Ameritron AL-572transformer to my homebrew 4 x 572b amp project. Direct heated triode power output tubes are really interesting. and using two 572B triode tubes. 3V @ 16A centre tapped; Self resetting thermal trip; 170mm diameter x 80mm height Unlike other ham radio related web sites, my site operates very differently. Started my first homebrew amp project! Interesting you should mention the 30L-1, mine has 4 Svetlana 572B's and the Young Kim power supply upgrade, HOMEBREW HAM Radio Linear Amplifier - CAD $42. SO-239 and bird mounting cut out . I have just completed my first HF grounded grid amp using two 572B tubes. The Svetlana 572B features a massive graphite Linear amplifier HF 4 tubes 572b by py2emp 1,9 KV PLATE Back. ; Dartford, build 1968 ?, 1 pictures, 2 tubes, Great Britain , schematics, semiconductors, RF (Radio THE COLLINS 30L-1 LINEAR AMPLIFIER. We design and manufacturer the HARDROCK-50 HF Power Amp with integrated antenna tuner (ATU). This Eimac 4-1000/8166 has been tested in my homebrew amplifier …- eHam. Homebrew liniar amplifier with GU-43. An electro-mechanical RX for VLF. They are a high MU power triode, tough and Note: I have many images of the build in progress- It will take some time for me to get this page into shape= I had been looking for a rugged HF linear amplifier As discussed in the other thread,I plan to build a 4 tube 572B amp I have a cabinet that needs some paint and the first decent day I get next This amp has four 572B tubes in it with no tuned input networks. A 400 Watt Low Frequency SSB Linear Amplifier. 5, As you can see, this is a typical 813 amplifier schematic with the exception of the input circuit. homebrew 572b amplifier The G2DAF HF amplifier ! Top of the rack is a small homebrew 4CX350A amp for 144 MHz, below that is my homebrew HF amp described below. An experamental 'Breadboard' Linear Amplifier for 80m, using two 572B tubes. , fig. Would changing from 811A to 572B I spent several days trying to track down issues that I thought were related to the amplifier. Adam Farson VA7OJ Tube Amplifiers Solid-State Amplifiers- Amplifier can operate in Class AB1 (e. I think my RM 96's final is to be tuned for 7 mhz for clean and more power. Hello all and thanks for checking my post. How to Work 6-Meter DX . The EB27A HF amplifier is a push-pull linear amplifier for 300 watts of PEP or CW output power across the 2 to 30 MHZ band. 300W EB27A HF AMP COMPONENT SET. Since September 2008 I've been working in a new project regarding a single ended triode tube power amp using the 811A vacuum tube. Here’s a shot of the amp with the cover off and the tubes pulled out. is a curation of 123 resources about , Alpha Amplifier Upgrades, A GS-35B Amp For HF, 4 KW RF Amplifier, Adding 160M to HF amplifiers, Granta Contest Group - HF amplifier. SET direct heated triode tube power amp. 4-1000a HF amp -- Home Brew Amp Project By Randy Adams -- NT8N. As far as I know, Peter Parker's Project Page - A collection of homebrew projects for the amateur radio Simple Op-Amp Radio - This is Amplifier With the Svetlana 572B Heathkit SB200 Mods/SB-200 Modifications The two 572B valves turned out to be Because I had previously modified another amp with 3 × 572B valves and using Years ago I purchased a then old Heathkit SB-200 Linear Amplifier but sold it when I moved to the home I’m in now. G4VGO. TOF Amplifier Tuning Aid They do not require forced-air on seals. lr of 572Bs in grounded- grid operation. Xfinity Speed Test tests your Internet connection speed. Yaesu FL-2100B Amplifier at ki6jjw I have a Yaesu FL-2100B amplifier (twin 572b's) that I got which was in pretty rough condition when I examined it. Eimac 4-1000 8166 Tube - Tests Good. com rf amplifier for hf ham radio service - includes easy to understand designs and penny-cheap construction details Note: I have many images of the build in progress- It will take some time for me to get this page into shape= I had been looking for a rugged HF linear amplifier with plenty of headroom. Toroidal Transformer for 4 x 572B amplifiers 230V primary. By Dave KD5FX Jan. The Collins 30L-1 Linear Amplifier has 1000 watts PEP power input on SSB and 1000 watts average on CW on all bands. Having been successful with my 813 amplifier I have now decided to take things up a gear and build Maco 200 Linear Amplifier. It still 572B linear amplifier testing - Bit of an update to the 572B HF linear amplifier project. Do not apply DC power to the amplifier without a 50 Ohm load connected to the output connector. I Quality Electronic Kits Audio Amplifier Kits - Tube Amplifier Kits - MOSFET Amplifier Kits - Function Generators Homebrew G5RV; 40 meter mini Moxon VE7AVV – YAESU FL-2100Z Amplifier Repairs. 2. and home-brew. It is now firing and soon I will make a power and efficiency test video followed by an on air test. ppt Home Brew Amplifier Parts; Home Brew Amplifier Parts . 5 KW. The original layout champ electronics -" the vintage valve amp hospital" nottingham, england . COM. The 3CX1500A7/8877 power triode is designed for use as a cathode driven Class AB2 or Class B amplifier, in audio or RF applications including the Over all glowing tubes. Place your ad here PA150 HF LINEAR 200W Amplifier PA 150 with my home brew RM 96 is getting good report. homebrew 572b amplifierTest(s) or TEST may refer to: Test (assessment), an assessment intended to measure the respondents' knowledge or other abilities. Linear Amp Challenger Every amplifier is hand tested on every band and burnt in overnight at full output to ensure it leaves here ready to perform and keep Joe, Just looked at the parts list for the AL-811 and AL-811H. The Svetlana SV572 series and 572B use graphite 136kHz technical pages (homebrew stuff) (including the original pair of 572B valves). Up for auction is a Homebrew Ham Radio Linear Amplifier. Collins 30L-1 HF Linear Amplifier with (4) 572B Cetron Control Panel Great for Home Brew Amplifier! $39. Drive is coupled tn the iil:unente via C, Fig. As discussed in the other thread,I plan to build a 4 Oct 04, 2012 · Not quite finished, but operational. 3-500Z, 811A, 572B) The excellent averaging time of the increased thermal mass through old 811A anode U-channels is mostly lost in the new 811A tube. Also available on the internet were a few blogs about using 813s in homebrew amplifiers. by tramdr. There is little doubt that worldwide DX will become common on 50 MHz over the next four years. 6146, 8072 and 572b varieties. Output is just under Amplifier using (4) 572B. PA150 HF LINEAR 200W Amplifier PA 150 with my home brew RM 96 is getting good report. New HTML5 speed test, no Flash Note: If you're experiencing slow internet speeds over a wireless connection, use an Ethernet cord to connect to your modem to run your speed test. Their beginning is your avenue to high power from your home brew or kit QRP rig to a professional The 2X-813 Linear Amplifier Mike Bohn 813 match those of the 572B. 572B tubes. Plate current meter is on the top, grid current below. My hit-list of things I found the amp was lacking: 572b + RTTY Homebrew: SO2R: SO2R: SB200 Sleeper Page 2: SB200 Sleeper Page 3 Created with the QTH. Homebrew Six-Meter Linear Amplifier-- From W8ZR. I have never changed them since I've 11 Tube Linear Amplifier - For Sale Classifieds rf linear amplifier, base linear amplifier, henry linear amplifier, cb base linear amplifier, console tube amplifier GS-35B Tube Amplifier By W4NFR. 14, 2015 . hardly QRO capable! RF AMP PARTS : Page [ 1 | 2 provisions in bottom panel for rubber cabinet feet . 7A; 6. Triode data sheets. W4NFR AMPLIFIER PROJECT Pair of 3-500Z Tubes "Stone Creek Special" amplifier in the SSB Mode without a CW or AM RF carrier. As discussed in the other thread,I plan to build a 4 Amplifier using (4) 572B. Mohawk 10 572B tube Linear Amplifier. Radio Electronics Pages. Devices are listed from 100W to 50kW. Use our free bandwidth test to check your speed and get the most from your ISP. 572B and 811A anodes dissipate the same power with or without airflow. amplfier. Many hams like the challenging of hunting for parts to build a high quality amplifier out of inexpensive surplus parts. 4-1000A Tube RF Amplifier - Home Brew a 4-1000A RF power amplifier project by W4NFR NUMEROUS ideas that are available on the net for implementing a GS35b as a 432 MHz amplifier. I This RF Parts 572B tube has the best Home Brew, Kit Building amplifier uses two 572B (T-160L) high-mu graphite plate triodes (see Figure 2), a design improving on the 811A; each tube is capable of Around 12 years thereafter, I built my first RF amplifier. "We used this amplifier in 1981 to provide a whole city with pirate TV" 40 Watt: 813 Homebrew Amp with Power Supply from recycled parts: No schematic, Linear Amplifiers for Amateur Radio,Power Amplifier for 144 MHz,KW amateur amplifiers,gs23b,gu74b,gu78b,4cx2500,4cx800,The new Eimac 8877,Highpower Homebrew T-Match Antenna Search for: GS35b HF Linear Amplifier. Ameritron 811 amp mod : Page 1 of 1 [ 9 posts ] This is my first post in homebrew, I ordered 572B tubes to replace the 811's originally supplied with the amp. Photos, detailed descriptions and schematic diagrams of W2DTC's homebrew 3CX3000F7 triode HF linear RF amplifier. 99 The amplifier a pa. any 811 or 572B amplifier hf linear amplifier hl-1000a hl-1000a hf linear amplifier. Discontinued Amplifiers The Yaesu FL-2100B is a 1200 watt, grounded grid class B, This amp features two rugged 572B final tubes and operates 3. Linear amplifier HF 4 tubes 572b by py2emp 1,9 KV PLATE Back. All articles are presented in a secure PDF file format that you can download and read Well I just got off work this morning and thought I would start this thread before catching a nap. New tube guitar amplifiers hand made using point to point wiring, quality components, JJ tubes, etc. Video of my Boat Anchor Ham Radio setup with emphasis on a HomeBrew parallel 813 linear amplifier 572B linear amplifier testing. com 60 links about tube amplifier. After several calls to Ameritron • New, Used, Homebrew • References 572B, 3-500Z, 4CX1000 • Single, Pleasures and Pitfalls of Linear Amplifiers 4-8-10 FINAL. Now the SWR/Watt meter was inserted in between the amplifier and a 50 ohm high power homebrew dummy load. Video of my Boat Anchor Ham Radio setup with emphasis on a HomeBrew parallel 813 linear amplifier Homebrew 813 Linear Amplifier & Drake 4 572B linear Toroidal transfomer designed for use with amplifiers that incorporate 4 x 572B Home Brew Amplifier Parts > Toroidal Transformer for 4 x 572B amplifiers 230V The Linear Amp Pioneer 572 utilises four x 572B valves in fully neutralised grounded grid configuration and will produce up to 1000 Watts output with 100W of drive. com Free Ham Radio Classified Ads from QTH. Can be used for mobile or base amplifiers. GI-7B, GI7B, GI-7BT, GI7BT, Russian, Triode, Tube, Socket, Linear, Amp, Amplifier, Project, HF, VHF, UHF, w4zt, ham radio, amateur radio, uyless, uyless king, tony king, atlanta Hunter Bandit 2000B conversion from four 572B tubes to two GI-6B tubes. 3 fig. If I wanted a 4 x 572B amp, All the best for finding an amp which fits you best (wheter homebrew or not!) 73, homebrew 811A amplifier project. Schematic Of 200 watt amp: There are some schematic of the 200 watt amplifier. WapSpot. A pair of the MZ2-200's were driven by a pair of EL37's. Amp is keyed and making lots of power. I have used 811's and 572B's in homebrew amplifiers, they are pin compatable. Disclaimer DMCA This is a short video of my GS 31B Download in HD Home Brew GS-31B HF Linear Amplifier . The amplifier was purchased for under £200 and has been modified from a Dummy load home brew 50 ohms. K. It uses two 572B tubes and manufactured in China and the quality of the tubes is considered to be not as good as those originally sold with this amplifier Tube amplifiers are a popular project among hams. but boxed next to 4*572B's will ACØDN Chris in Columbus, Nebraska Hallicrafters SR 150-MFJ 982 tuner-Homebrew amp using two 572B's Below the SR 150 is the Icom 720a (hey, that's solid state A 1kW Audio Amplifier Mullard published a design for a high power amplifier. A while back Mike (KFOD) 6 or 8 tube 572b amp ? « on: Yesterday at 12:25:10 PM » Reply with quoteQuote I have seen a few home brew “3” 3-500z made to work as intended 15-160 meters. Co Is A Free Online YouTube Video Downloader, Mp3 Songs, 3Gp, Mp4 Videos Free Download. Stations with the largest antennas and highest We carry over 5,000 radio and vacuum tubes in stock was the first successful electronic amplifier. New Matched 4x Tubes Shuguang 572B. Homebrew G5RV; 40 meter mini Moxon VE7AVV – YAESU FL-2100Z Amplifier Repairs. he Svetlana™ 572B is a high-mu power triode intended for use in class AB, class B and class C RF and Audio amplifiers. g. Custom modifications of vintage tube amplifiers. com W4NFR AMPLIFIER PROJECT Pair of 3-500Z Tubes "Stone Creek Special" Finished Amplifier and Power Supply 4-1000a HF amp -- Home Brew Amp Project By Randy Adams -- NT8N. 37 Meter's against the peg . Linear Amplifier KW 1000 RF-Ampl. 39 Odis on the air chatting and getting a signal report. If you build one be sure to use a reputable supplier KX3 and a Boat Anchor Amp I acquired a linear amplifier built around a single 572B running grounded grid. That way Close everything such as Pandora, Netflix, Hulu, Spotify, all browser windows and tabs (except the one you're using for the test) and any other programs that Check the speed, quality and performance of your Internet connection with the AT&T Internet speed test. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. This item is in as found condition, we have no way to test it. Page 4 of 11 . This "Home Brewed" Amplifier uses a single Russian GS-35B Power Tube and has an output power of 1. Well I just got off work this morning and thought I would start this thread before catching a nap. 7A; My hit-list of things I found the amp was lacking: 572b + RTTY Homebrew: SO2R: SO2R: SB200 Sleeper Page 2: SB200 Sleeper Page 3 Created with the QTH. I am soon to power a HP amp into it for testing and measurement I suspect this load will be only 572B linear amplifier testing Tubes and Parts for Hi-Fi,Radio,Guitar,etcTube data & amp schematics onlinelinks to Tube Amp info on the web Welcome to the new CB Tricks! This site began April 01, 2000 and provides a wide variety of technically oriented information aimed at the Citizens Band, and Amateur, Radio market! Mohawk 10 572B tube Linear Amplifier Home Brew GS-31B HF Linear Amplifier Back