About gs 35b tube amp the resource is currently listed in in a single category. W4zt socket this is my gs35b tube socket or mounting fixture design. Any power amplifier needs several levels of protection. Unfortunately, with the tubes i have i only got very limited information, and i am now looking for a full data sheet for this tube and application information if it exists. The gs35b has different filament requirements so a new filament transformer and current limiter were purchased from r. The factory was manufacturing the tube in such a manner as to. I have been thinking of building a hf linear amplifier for some time, now i have most of the bits it may. I like to show you here the steps from this project. It shows the basic steps that i went through during construction. The main category is amateur linear amplifiers that is about hf amplifiers for ham radio use. Tubes for ham radio use hfvhfuhf,linear amplifier builders. The idle current at 1800 vdc should be around 250 ma with zero bias.
It means that if you use a 100 watt transceiver, you can drive the gs35b with 75 watts, get 1500 watts output and have headroom to spare. Avenger single 4 tube amp performance report duration. The technical data is contained in the highresolution color scans of over 20 original catalogs from 1958 to 1963. Amateur amplifiers have been built using this tube for every. The russian gs31b and gs35b triodes can require up to 30v bias, or even more. Sockets for the russian gs35b triode transmitting tube and ptfe chimney. Gs35b hf linear amplifier having been successful with my 8 amplifier i have now decided to take things up a gear and build something even more powerful. I recently got the opportunity to put together this desk top amplifier using the gs 35b triode. Under the dirt was a brand new tube i collect the parts for this. Intermodulation distortion of the 3rd order minus 32 db. The amp is extremely well built with a large power supply that will supply at least 4kv at 1. The amplifier described here is an update of the high power linear amplifier. Gs35b also gs7b metalceramic transmitting power triode at frequencies up to mhz.
The socket to the right has my teflon chimney in place. W4zt socket this is my gs 35b tube socket or mounting fixture design. The so called specification sheet for the gs31bgs35b was provided for the tubes as they were produced in the soyus unionengl. High power tube amplifier for 144mhz using the russian triode gs35b. Choosing a backup generator plus 3 legal house connection options transfer switch and more duration. From hf, vhf, uhf, 50mhz, 70mhz and 144mhz through to 432mhz and 1296mhz the dx shop supplies linear amplifiers, antennas, aerials, masthead preamplifiers, lna, coaxial cables and connectors, sequencers and amplifiers for your ham radio station. I have been told the ideal voltage for the gs 35b is approximately 3700vdc.
Amateur amplifiers have been built using this tube for every band from 160. The case will be a 19 inch 6 inch high server case. The so called specification sheet for the gs35b was provided for the tubes as they were produced in the union factory for the russian military and select civil. High power gs35b tube amplifier 144mhz dg2kbc german. This home brewed amplifier uses a single russian gs 35b power tube and has an output power of 1. Using these examples you should be able to figure out the rest of the numbers in the chart above.
The gs35b is a russian triode that is relatively cheap and easy to get hold of. Nobody liked to buy this tube because the cooler was a little bit deformed. Also, with the gs 35b, being that it is an indirectly heated cathode tube design, you can use a regulated dc power supply for the filament. The russian highmu triode, a gs35b, is connected in a groundedgrid. I decided to go with some sort of grounded grid triodes or triode. Click on the picture to see the details of the construction. Nov 10, 2010 the gs 35b will need in the mid 3kv range to work with available drive from the typical slopbucket sized rig. Gs35b gs35b russian triode tube,socket and teflon chimney. Electron tube data sheets electron tube data sheets.
I get a roller inductorturn counter set from w4imd. The harris originally had the filament transformer directly to the tube s heater terminals and this is supposed to be bad design. The spec sheet says the life to be expected from a gs35b is. So when you get the valve it can be put into immediate use with full voltages. The gs 35a version of this tube which is intended for water cooling, which adds 500w to the allowable anode dissipation.
My newest selfmade linear with one gs35b dc2wk blog. The standard fit blower must have been one of a job lot as its the same blower as fitted to most, if not all, of the linear amp uk amplifiers. Listed under the technical referenceamplifiershf amplifiers category that is about amateur linear amplifiers. Gs35b specifications, dimensions and data w4zt geocities.
The hvps locks out the ptt for this period of time. Although the gs31b has the same base as this tube, it has a much smaller anode cooler and is rated for much less power. Electron tube data sheets electron tube data sheets, valve, tube, electron tube, vacuum tube, diode, triode, tetrode, pentode, hexode, heptode, octode, enneode. Df6na datasheets gs35b also gs7b metalceramic transmitting power triode at frequencies up to mhz. Caution should also be exercised when operating the tube with filament voltages that may go below the nominal 12. The gs35bgs35b tubes is used for wideband power amplification at frequencies up to mhz in rf equipment. A little more plate voltage and plate input power can increase. These same specifications can be applied to the gs 7b not to be confused with the gi7 which appears to be an old commercially produced version of the gs 35b. Compared with an 3cx1500 8877 this tube is rather cheap and performing quite well. First licenced in 1978, my primary interest in ham radio has always been home brewing and 160 meters.
I cut a 3 inch square hole in the bottom to allow air flow from the blower. The gs 35b has different filament requirements so a new filament transformer and current limiter were purchased from r. Gs35b 6m amplifier here are some pictures of my gs35b amplifier for 6 meters i built back in 2005. The gs 35b is specd at 6kv max peak and 3 kv operating, at mhz. But this gs35b tube has big copper heat sink with very big heat inertia. This amplifier was designed to run 247 key down for heavy contesting and high duty cycle wsjt modes. One tube will play into the same tank as your pair of 3500zs without any changes. Gs35b is a russian power triode available on various radio markets all over europe for an acceptable price. The tube can be cooked by, bypassing biasing voltages, and running the tube at 1800 vdc. This amplifier is similar to the rest of them, this page is a quick overview of my project.
This home brewed amplifier uses a single russian gs35b powertube and has an output power of 1. It is built to last and provide many years of reliable service. Prior to sale we run each one up heaters only on a test rig with full cooling applied for a few hours. For hf and 6 meters, i would feel pretty comfortable running it at 4 kv maybe even 4. It virtually eliminates the stray inductance in the grid circuit. To put item to basket click on the basket picture or price.
This is not a construction article nor is it a detailed modification. The tube needs to be run under these conditions for 4 or 5 hours, with full forced air coolingto remove the heat. This link is listed in our web site directory since wednesday aug 8 2012, and till today gs 35b tube amp has been followed for a total of 499 times. The gs 35b is a forced air cooled triode with a maximum plate dissipation of 2kw and a maximum usable frequency of 1 ghz. The gs 35b triode provides continuous wave generation in externalfeedback selfsustained oscillators and groundedgrid amplifiers up to 1,000 mhz. These same specifications can be applied to the gs7b not to be confused with the gi7 which appears to be an old commercially produced version of the gs35b. These same specifications can be applied to the gs 7b which appears to be a commercially produced version of the gs 35b. Amateur amplifiers have been built using this tube for every band from 160 meters through 23 cm.
Note this is for the valve only without the copper anode cooler. These tubes were produced primarily for use in uhf radar applications. Power coaxial triode the gi46b microwave triode operates as an oscillator and an amplifier in continuouswave or pulsed mode with anode modulation in the centimetric max 28cm wavelength ranges. Although the gs 31b has the same base as this tube, it has a much smaller anode cooler and is rated for much less power.
The so called specification sheet for the gs31bgs35b was provided for the tubes as. Please dont ask for specific details on this project. The gs35b is a medium mu triode that yields about db gain in amateur service. My first choice was a pair of 3500zgs but a friend of mind who is helping me with the project, talked me into the gs 35b.
There are lots of web documents and pages about amateur amplifier projects. I make and sell sockets, ptfe chimneys and bias boards. We sale of brand new gs35b 2,5kw tubes at the best price in the world. In march 20 i start to build a big linear with linear with the russian gs35b triode tube. The dx shop antennas, amplifiers and accessories for the dedicated radio amateur. Rf oscillation and amplification up to mhz in continous mode. I made a double bottom sheet, so the cables can be under the bottom. Under the dirt was a brand new tube i collect the parts for this linear over one year on fleemarkets. The gs35a version of this tube which is intended for water cooling, which adds 500w to the allowable anode dissipation. The spec sheet says the life to be expected from a gs 35b is.