Best Amplifier

Discussion in 'Ham Radio Discussions' started by KA4DPO, Dec 5, 2018.

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  1. WB2WIK

    WB2WIK Premium Subscriber QRZ Page

    Maybe you're referring to Mel W6FDR who I've known for almost 40 years and does have a 5L monobander at about 80' for 20 meters; he also lives on a hilltop, hundreds of feet above average terrain and is on almost every early morning (early here in L.A., anyway) chatting with his brother.
     
  2. W2AI

    W2AI QRZ Lifetime Member #240 Life Member Platinum Subscriber QRZ Page

    Yes, Steve; it was Mel W6FDR I heard earlier this morning.
     
  3. WB2WIK

    WB2WIK Premium Subscriber QRZ Page

    I've joined him in his early AM ragchew sometimes on Saturday mornings, but can't be there during the "working week" days, as when he's ragchewing I'm getting ready to leave the house.:p

    Mel has a stellar QTH, wide open on a hilltop, and a very good beam (Hy-Gain 205BA) on a good tower (LM470D) -- and always has!
     
    W2AI likes this.
  4. KL7FZ

    KL7FZ Ham Member QRZ Page

    I hear HAARP has some nice ones.

    But as some have said in earlier posts, you need to define your parameters.
     
  5. KO3US

    KO3US XML Subscriber QRZ Page

    If you cant get up a fantastic antenna then just go ahead a buy a 1500w amp now. You're going to do it away in the future. :D
     
  6. AA7QQ

    AA7QQ Ham Member QRZ Page

    Sweet 16 was still an 8 transistor unit. Just no 2 transistor driver, like the 1200.
    I might know a thing or two about Texas Star.....

    Ed
     
  7. AA7QQ

    AA7QQ Ham Member QRZ Page

    My junk, surplus LDMOS amps are the best. Dirt cheap, already designed by them Engineer folks & just need to add switching, LPFs & sometimes, bias.
    2-MRF154 pallet working, on a nice beryllium/copper spreader, $112 on Ebay. $30 server power supply & LPFs.
    6-MRF-151Gs in a Larcan VHF LO TV amp, Excellent on 6M with a $30 server power supply & an ICE LPF.
    4-MRF151s for a 2M amp (Retuned FM Broadcast). Wilkinson splitters/combiners, LPF & you guessed it, a $30 server power supply.
    Oh, a 5Mhz-500Mhz BLF574 amp at 400W....

    All of the above cost me less than a new Acom….

    Next will be 2-1800W LDMOSs for HF, same for 2M & hopefully 1 for 440 Mhz. All water cooled.

    Ed
     
    K6LPM likes this.
  8. N6RGR

    N6RGR Ham Member QRZ Page

    My votes:

    Best price: AL-80b
    Best built: Acom A1000

    Advantages on both: no fold back with higher SWR up to 3.0.

    Roger N6RGR
     
  9. WB2WIK

    WB2WIK Premium Subscriber QRZ Page

    Pretty good synopsis.

    Advantage to AL-80B: Instant on (no warm up time); easy to replace tube (3-500ZG), just plugs in; zero processing/digital circuitry to fail -- it simply doesn't have any.
    Advantage to A1000: It covers 6 meters (!); has a unique tuning indicator system that doesn't require watching meters at all, and actually works well.
    Disadvantage to A1000: It does employ sophisticated digital circuitry (control systems, warning systems, timer, memories) which might fail; it requires 2.5 mins warm-up (it controls that, itself); the GU74B tube, while a good and rugged tube, is not a simple "plug & play" -- they recommend factory service for tube replacement.
     
    W2AI and N6RGR like this.
  10. W2JKT

    W2JKT Ham Member QRZ Page

    I've had an AL-811H that I was really happy with. I ordered an ACOM A1200S from HRO a couple of months ago but still waiting for it to come in. Apparently ACOM doesn't have much production capacity, though they make a good amplifier judging from reviews.
     

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