Astron vs 20m user manual

Astron vs m variable power supplies are available in multiple models to suit your individual power requirements. Im running a icom pro3, a 2 meter rig, and a wattmeter to it. Current stock status at these ham radio outlet locations. The astron vs 20m is essentially an adjustable rs 20m. Adjusting the output voltage of astron linear power supplies. Solid state electronically regulated heavy duty heat sink. This astron hit the bench with the symptoms of very low voltage around one or so volts and high current up over 25 amps without any load connected. No international bidders, ships to continental usa only.

Complete user manual 58 pages handy manual 18 pages basic manual 16 pages. Feb 01, 2021 these astron corporation vs series linear power supplies offer continuous output current ratings from 9 to 57 amps at. Rm50a, rm50m, rs50a, rs50m originally had a 2009 schematic that did not match the parts list. My wife was given a fairly new power transformer for her new ham base radio im buying her for christmas. The rectifier is a bridge type that is more efficient vs full wavecenter tap design with regard to transformer ac to dc conversion efficiency. Vs 70m 2kb, dated 63095 donated by brian palmersheim, kboetc. The astron vs 50m is a high quality, linear, regulated power supply providing variable voltage from 2 to 15 vdc at up to 50 amps continuous or 37 amps ics. Vs 20m 78 kb pdf, dated 012000 donated by larry horlick vyohl. Astron diagrams, schematics and service manuals download for free. Here is one of my favorite astron power supplies because of the variable voltage and variable current limiting. How to fix the astron power supply amp meter astron 70 model number vs 70m amp meter not working. Since covering a pair of pyramid power supplies, i have been asked about astron. Even their power supplies with only cigarette lighter sockets on the front panel still have.

This supply is a dedicated supply for my kenwood tm281 and operates flawlessly just about 247. Astron dc power supplies are made in the usa of heavy duty, high quality materials. Ultimate astron power supply repair service manual schematics. Astron corporation manufactures full line of reliable dc power supplies addressing the needs of consumer and professional users. Manager took that qst article and the schematic and produced an annotated schematicastron rs 20m 11 15 volts adjustable dc linear. Our original linear power supplies now with anderson power poles. Astrons documentation shows an extra led indicator, which is not actually part of the ovpr12v. Astron 20a linear power supply wseparate volt and amp meters, 20a ics 16a continuous, 5x9x1012in astron rs 20m javascript seems to be disabled in your browser.

Rs35a 5 kb, dated 011978 donated by joe mcintyre w4dex rs35m 46 kb, dated 041987 donated by kevin custer w3kkc. This astron hit the bench with the symptoms of very low voltage around one or so volts and high current up over 25 amps without any load. Because the current gain of these transistors can vary from lottolot, a low value, series, current balancing resistor is added to each emitter output. A long time ago, i purchased a solarcon antron 99 antenna for my propagation beacon. Astron vs20ml dc power power supplies variable, vs20ml. Vs 35m 322kb, dated 187 donated by steve duncan, wa4ita. Be prepared and able to communicate in case of emergency with the largest selection at. Astron universal radio communication power supplies for. American communication systems twoway radio dealer. Perfect for all repairservice shop or professionals users that want to have a lot of astron service schematics. The vs version has two frontpanel meters and two controls.

I purchased an astron ss25m in august 2014 and set out to make it fit my needs. Schematics and service information on astron power supplies. Schematic diagrams of some popular astron linear power sup. If the supply has the m suffix, those under 20a usually only have room for just one meter. After installing it in the shack we noticed that the amp meter did not work or worked very little. An astron supply can have from one to many paralleled pass transistors. Looking for a users manual antique radio forums view topic. Astron recommends increasing the value of r4 from 300 ohms to 500 ohms to resolve this issue. Service manuals, schematics, eproms for electrical technicians. Astron rs20map dc power power supplies fixed, rs20map. These astron corporation vs series linear power supplies offer continuous output current ratings from 9 to 57 amps at. Astron rs20a rs20s sch service manual download, schematics. According to astron, it is capable of 25 amps continuous and 35 amps. Maintains regulation and low ripple at low line input voltage.

Front panel controls provide current limiting and voltage adjustment, while dual meters monitor the output condition. Astron rs 20m ap 11 15 volts adjustable dc linear power supply 16 amps cont 20 amps ics with meters and powerpoles. Vs 20m 26 kb pdf, dated 111978 vs 20m 80 kb pdf, dated 091986 vs 20m 78 kb pdf, dated 012000 donated by larry horlick vyohl this supply is also known as a motorola rrdn6082a. Entire package was impulse purchased at a past dayton hamfest during a persuasive yaesu factory authorized promotional sale. There are no bad marks or scratches, and no problems. I purchased this astron rs 20m power supply, used, off ebay 5 years ago.

Emergency battery backup and battery charger module. The front panel features an illuminated onoff power switch. Feb 09, 20 i just bought a used astron vs 50m 50 amp supply to replace my astron 35 amp one. Schematics and service information on astron linear and switching power supplies. Astron vs 20ml 2 15 volts adjustable dc linear power supply 16 amps cont 20 amps ics with backlit meters. This model had adjustable voltage and amp controls on the front panel making it and excellent bench power supply. Models rs50m, rs70m and vs50m do not qualify for flatrate shipping. Full height desktop or rack mount, fixed voltage or adjustable, 14v or 28v units, whose model number starts with rs, rm, vs, vrm, ls, lsrm, and vls.

There are basically two styles of astron linear power supplies. This is useful for bench work, as you can change voltage from about 1. Ss12 switching supply 55kb, dated 8221996 donated by eric lemmon wb6fly. Astron has your power requirements covered with a wide variety of voltage and amperage outputs and case styles with and without meters. As with all projects of this sort, you do this at your own risk, it voids the warranty, it could cause damage to the power supply, the equipment attached to the power supply, and surrounding property. Dana kd2hyh had such a problem with his vs 35m and a yaesu ftdx3000d radio. My order date exceeded one year by 3 weeks at the time i tried to purchase lamps from astron. Astron vs20m dc power supplies sale purchase buy rent. Fold back current limiting protects power supply from excessive current and continuous shorted output. Astron dc power supplies are made of heavyduty, highquality materials. By tech 833 have you ever wondered what was inside the antron 99 antenna. The vs m series power supplies are high quality electronic gear intended for the hobbyist or professional and are appropriate for powering any 12 volt. Astron builds supplies for several major manufacturers.

Parallel operation of astron linear power supplies by robert w. Jul 12, 2003 problem with transient spike on astron rs50m power supply. Meaning meter lamps lasted somewhere between 8 to 10 months. Manufactured as traditional power supplies, they utilize. The knob on the left is used to limit the output current from 1. Models starting with vs are variable 2 to 15 volts. When you are in need of reliable dc power supply, look no further than astron power supplies. I adjusted the meters on the unit and ran a test on it before putting it in service. We purchased this astron 70 amp power supply, new, from ham radio outlet. Pay pal ok only if remittance is feefree friends and family. Jun 21, 2019 astron vs 35m variable dc power supply gets an upgraded mosfet overvoltage circuit most other manufacturer sites i have visited have pdf download files for their equipment.

Manager took that qst article and the schematic and produced an annotated schematicastron rs20m 11 15 volts adjustable dc linear. There is a separate meter for voltage and one current. Crowbar over voltage protection on all models except rs4a, rs4l, rs5a, rs5l. Troubleshooting and repair of an astron rs20m power. Astron marketing gets around that by saying that in normal operation the. They routinely had to educate new radio amateurs, desiring save a few dollars asking to buy the rs20a, about the definition and meaning of icas versus ccs ratings. For some new radio amateurs satron is a second language, and can better understand some electronics concepts and repairs via video youtube instruction or pictorial diagrams. Manually triggered charge mode reconditions battery to maximum capacity on. Many of these supplies come with one or two meters. When amateur electronics supply aes existed, they sold the astron rs35a for new sales of the 100 watt solidstate transceivers. Astron vs 35m variable dc power supply gets an upgraded mosfet overvoltage circuit. Both supplies were not placed in service until 3 months after their purchase.

Schematic diagrams of some popular astron switching power supplies. Troubleshooting and repair of an astron rs20m power supply. This unit is built like a tank and i love the looks of it with its amp and volt meters. Some supplies will go into foldback current limiting when a highcapacitance load is attached, due to the high inrush current. I have had good luck with all my astron power supplies when it comes to supplying power. The vs m series power supplies are specifically manufactured for use indoors. Schematic diagrams of some popular astron linear power supplies. Astron rs35m rs35a sch service manual download, schematics.