Astron DC power supplies are made of heavy duty, high quality materials Find Astron Power Supplies RSA and get Free Standard Shipping on orders over. Buy Astron Original RSA Power Supply, Linear, Regulated, 20A Peak, 16A Continuous, Output: Vdc, Input: V: Internal Power Supplies. ASTRON RSA 11 – 15 Volts Adjustable DC Linear Power Supply 16 Amps Cont 20 Amps ICS.
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This circuit prevents damage to your radio equipment, due to over voltage. I have not turned up the FTD to full W, but otherwise it is a solid power supply.
The unit is tested and working. Is this an easy fix? It’s job is to turn on and short out the supply if the voltage gets to high typically due to a pass transistor shortkinda like throwing a “crowbar” across the supply. But again, you’re going to need a meter, soldering iron, and a knowledge of what’s safe to do and what’s not. Product Narrative Astron linear power supplies are heavy duty and solid state electronically regulated. Cliff – When a fuse blows 5 amps in this casethen a short or component failure is causing excessive electrical current.
Astron RSA: Radio Communication | eBay
Guaranteed to work as described. The reason I only gave a How to read Astron Corporation power supply model numbers: Three Conductor Power Cord. Use a recent version of the Adobe Acrobat reader and just mouse astdon the yellow rs2a0 symbols.
What is “SCR in the crowbar”? I have owned this model of supply since I was first licensed in Hopefully yours won’t catch fire as astrom one belonging to a fellow ham I knew. Dad was an active and avid HAM radio operator for 73 years!
If these steps tested OK the regulator has probably failed. Need to keep the Astron on the floor, away from the RF, and it stays happy. Rock solid when used within the specifications. This Amp works great. See this web page for useful information on fixing your Astron and removing some of the problems built into them at the factory.
A question is why did the power supply fail? It is now a challenge to see if, it can be made to work as advertised. If nothing sticks out, disconnect the transformers secondary winding from the rectifier and see if it blows a fuse.
If a short is indicated a transistor is shorted. A trailing “M” indicates models with front panel Meters.
Index of /SCSSTreasuresCatalog/hardware/temp-Astron-RS20A
I just got my ticket last week, I tested straight through to General Class, I say that sstron to brag but to show that I am still green and I need help. It is continuous at 16 amps and 20a ICS, for those who want 20 amps continuous buy a bigger supply!
Unless one is skilled and careful it’s easy to do it wrong and cause another point of failure. He was a radio, TV and other electronics serviceman for much of his life, and he loved radio!
And I can tell something is burned up because I smelled it KV6OMay 17, W9GBMay 17, This can lead to the fuse blowing if current limiting doesn’t prevent that. Case is in good condition with small scratches. New to Ham Radio? I have been using it daily for about 7 years now, the only time its turned off is during power outages I get a lot of them where I live.
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Due to part swappers it is being sold as is with no returns.
I know I’m taxing it to the limit running watts CW but it works flawlessly. After that, she bought an Astron. Astron power supply part number example: Several models come equipped with a metal sleeve hoodfor a two-way radio to be mounted inside. astrob
I was recently Given this RSA. Using an ohmmeter measure the resistance from the 2N case to one pin or the other. I think its the diode between the big cap. The power supply was barely keeping up.