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  1. eagle1911

    800VA IsoBox Isolation Transformer - Also Dell D600 Laptop

    I have an 800VA IsoBox medical grade isolation transformer system, a working pull from medical equipment. Transformer from Toroid Corporation of Maryland. Provides 8 outlets at 110VAC plus 5VDC and +-15VDC sources. Good for isolating equipment from the mains for protection and noise reduction...
  2. eagle1911

    Solid-State Amplifiers: What is distortion and how do I reduce it?

    Based on a couple posts I made in several different threads, it occurred to me (after a suggestion from Moleculo) that this site could use a thread dedicated to solid-state amplifiers and how to keep their output clean. Maintaining clean output from a station is a foremost obligation of any...
  3. eagle1911

    Normal Guy

    Not exactly new, but new to me. My buddy showed me this the other day I nearly fell over laughing.. hilarious! Ignore if you've already seen it.. Everyday Normal Guy - CollegeHumor Video
  4. eagle1911

    Looking for source of heatsink enclosures for solid-state amplifiers.

    I've got a couple of amplifier projects coming up that will require enclosures. My worst-case plan is to get a heatsink, have it drilled, and find some sort of enclosure for it. There are other amplifier enthusiasts and builders here, so in the interest of simplicity I'm hoping that someone...
  5. eagle1911

    Construction of 140W PEP EB63 amplifier + Low-Pass Filters

    here's my newest acquisition: A complete set of parts for the EB63 amplifier (2xMRF454 class AB), which is rated for 140W PEP output. I got it for a song ($60) on ebay.. plus as a bonus it included 2 Communications Concepts low-pass kits for 20 and 40m. Not a complete set, but way better...
  6. eagle1911

    1250W CW from a single power FET!!

    New from Freescale, the MRFE6VP61K25H LDMOS RF power MOSFET is capable of 1250W CW power output @ 50VDC from 1.8-600MHz. My how far things have come.. MRFE6VP61K25H Product Summary Page I had heard a price of ~250 per unit.. not too shabby for better than a kW. EDIT: the device is actually a...
  7. eagle1911

    Is trust in a person's statements freely given or earned? Share your thoughts..

    POLL QUESTION CHANGED (thank you Booty for pointing out my error): IS TRUST FREELY GIVEN OR EARNED? I'm curious to see how folks here feel about things like this, so I'm starting an anonymous poll. People can feel free to participate or ignore this as they see fit. If someone were to come up...
  8. eagle1911

    Transistor (BJT/FET) manufacturer comparison

    Another thread brought to mind a question I've had for some time regarding component manufacturer's reputations for quality. With RF power transistors, there are only a few major manufacturers: Motorola Toshiba SGS Thompson (ST) TRW (not sure if they are still around) M/A COM RFG (seen...
  9. eagle1911

    Multi-band Low-pass Filter Kit for unfiltered amps

    To start this thread let me state that I am on a SERIOUS budget when it comes to my radio hobby, so I'm always looking for ways that I can get top-shelf performance (or close to it) from inexpensive gear. Right now I've got QRP capability on the HF bands. I need an amplifier, but the FCC...
  10. eagle1911

    Quick and Dirty Class "AB" mod for KL300p

    This is a "quick and dirty" class AB mod for the KL300p that I ran across some time ago. While this description is for the KL300p, this method of providing a small bias source can be applied to just about any class C amp. Basically any amp that grounds the bases of the transistors via an...
  11. eagle1911

    Solid State Amps, Classes, Cleanliness..

    OK, so I've been doing a bit of research into RF amplifier design, and I've got a few questions for the experts here. First off, let me apologize in advance for any n00bish questions I might ask, as I am fairly new to the theory behind amplification. I have several HF/10/12m amps, mostly of...