ELMER NEEDED....HEATHKIT SB-200

Discussion in 'Amateur Radio Amplifiers' started by KC5H, Dec 24, 2010.

Thread Status:
Not open for further replies.
ad: L-HROutlet
ad: l-rl
ad: l-BCInc
ad: Subscribe
ad: L-MFJ
ad: Left-3
ad: Left-2
  1. KC5H

    KC5H Ham Member QRZ Page

    I JUST RECIEVED A HEITHKIT SB-200 (JUST THE AMP ,NO MANUAL) AND HAVE NO IDEA HOW TO TUNE THE THING...YES I'M AN EXTRA BUT I'M ALSO AN ELECTRONICS DUFFAS. ANY HELP WITH TUNING PROCEDUERS OR LINK TO PDF OPERATIONS MANUAL, WOULD BE GREAT.
    THANKS, GOAT
    73 KC5H
     
  2. WB2WIK

    WB2WIK Platinum Subscriber Platinum Subscriber QRZ Page

    Heathkit?

    Dufus?;)

    BAMA and other sites had to ditch their reproductions of Heathkit manuals due to copyright infringement issues which were being pursued by the owner of the Heathkit intellectual properties. So, although they used to all be on line a few years ago, they're harder to find now.

    But it tunes up exactly the same way as other pi-net amplifiers, so if you download a manual from an Ameritron AL-811H or something and follow those instructions, they'd still apply.

    It's very helpful to have a real wattmeter in line, as the SB-200 "output" meter is "relative power" only and doesn't correspond to Watts. Still in lieu of an external wattmeter, it gives a pretty good idea of what's going on.
     
  3. WB2WIK

    WB2WIK Platinum Subscriber Platinum Subscriber QRZ Page

    One more note I might add as I'm sure others will, or are thinking, is the SB-200, unless already modified by a previous owner, is not compatible with modern solid state transceivers with regard to the keying line; if you use a modern rig, and the amp has not been modified for low-voltage keying, you'll need an external keying line interface.
     
  4. KC5H

    KC5H Ham Member QRZ Page

    elmer

    thanks ...bama still has the manual...
     
  5. K9STH

    K9STH Platinum Subscriber Volunteer Moderator Platinum Subscriber QRZ Page

    Unless you found an old backup of the site, BAMA has not carried any of the Heath manuals for several years. Ken, K4XL, the owner of BAMA was directed to remove the copies by the present copyright holder. The old BAMA site is no longer operational. The mirror site is still operating. That URL is

    http://bama.edebris.com/manuals/

    Glen, K9STH
     
  6. N6WK

    N6WK Guest

    Glen,
    Who is the current copyright holder and Why in the world would he do that to BAMA ? Makes no sense to me!
    Aren't they considered public domain if Heathkit no longer publishes them or a time limit on the Copyright?
    Gordon
     
  7. AF6LJ

    AF6LJ Ham Member QRZ Page

  8. AD6KA

    AD6KA Ham Member QRZ Page

    Here is a list of over a dozen sources of Heathkit Manuals.
    http://www.nostalgickitscentral.com/heath/heath-resources.html

    (Gotta pay, though I didn't check them all out).
    That site is also a good source for all manner of
    Heathkit stuff: Repair Services, PARTS, Photos, Publications,
    Heathkit Nets, etc.

    Steve, WB2WIK was smart to give you that good advice
    about the amp's keying voltage. If you tried to hook it's PTT
    up to a modern rig, you'd definitely damage the radio.
    :(
    You need one of these:
    http://www.ameritron.com/Product.php?productid=ARB-704

    I also recommend you get a decent dummy load rated for the amp,
    especially since you are new to tuning amps. I have this one:
    http://www.mfjenterprises.com/Product.php?productid=MFJ-250
    Yeah, at first it seems odd to have a paint bucket filled with
    oil on the floor of your shack. There are "dry" dummy loads
    rated for an amp like yours, but they are more expensive and
    have shorter load rating times.

    To learn more about amps, how they work, how to use
    then properly and keep them in good repair, see Tom, W8JI's
    terrific site. Tom designed many of the amps used by hams,
    including several still being manufactured sold by Ameritron.
    http://www.w8ji.com/Amplifiers.htm

    GL ES 73, Ken AD6KA

    EDIT: OOPS< Susan beat me to it, posting the Heathkit Resource link!
     
  9. WA7PRC

    WA7PRC Ham Member QRZ Page

    I've done some reading about the matter of Heathkit manuals. I've seen a scan of what was purported to be the original agreement. Don Peterson (Data Professionals) purchased Heath's remaining manuals and the right to reproduce them. There's a reference to this agreement posted here. It would appear that what's left of Heathkit still owns the intellectual property itself. Mr. Peterson has waved the agreement in the faces of owners of some websites (BAMA, Pestingers, etc) that hosted files, and they blinked. But, Heathkit manuals can still be found online for free. I'm not going to pass that website to anyone in a public forum because I also don't want to have to deal with lawyers. :( The good news is, a hardcopy manual can be purchased from Data Professionals for only $15.

    Some have assumed the OP is using a modern rig. He never said what rig he's using to drive the SB200, and didn't say whether or not the SB200 had been modified for soft keying. If he's driving it with a boatanchor, he needs nothing. If it needs a relay driver, it can be homebrewed quite simply with a handful of inexpensive parts such as the one used by K4TLJ: http://forums.qrz.com/showthread.php?t=212571. :)

    The link above to Tom/W8JI's amplifier page is good reading for newcomers to linear amplifiers. I would include his http://www.w8ji.com/loading_amplifier.htm page as required reading.
     
    Last edited: Dec 25, 2010
  10. K5DBX

    K5DBX Ham Member QRZ Page

Thread Status:
Not open for further replies.

Share This Page