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Author Topic: OPERATING THE SB-220 ???  (Read 1001 times)
KG4HEB
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Posts: 58




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« on: March 25, 2002, 08:42:03 PM »

Can anyone please explain to me how to operate the SB-220 on all it's bands ? Iam new to working with older equipment like this . I got to learn somewhere right ? Also , is it possible to run only 1kw instead of 2kw with the amp by putting only 50w instead of 100w into it or how ? I am on my way to General and want to be ready to use the amp .  I'll be using the FT-920 and Cushcraft MA5B with the Heathkit SB-220 . Thanks for all your help .  73's,  Sam,  kg4heb@psknet.com
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KO4NR
Member

Posts: 117




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« Reply #1 on: March 26, 2002, 12:45:01 PM »

Tune it with a Tuning Pulser.
Look here:
http://www.vcnet.com/measures/D.a.09.GIF

FAR Circuits offers a little circuit board built on this schematic.
www.farcircuits.net
73,
Bill Smith KO4NR
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W9GB
Member

Posts: 2659




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« Reply #2 on: April 28, 2002, 08:51:00 PM »

For your information on the SB-220

http://www.vcnet.com/measures/sb-220.html

You should consider the soft-switch for modern solid state rigs:
http://www.harbachelectronics.com/


http://www.nctotalelectronics.com/


w9gb
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KD7KOY
Member

Posts: 97




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« Reply #3 on: May 03, 2002, 04:31:40 PM »

I have a SB-201. If the 220 is anything like the 201, it's a real workhorse. Whatever you do, get the manual. You can download it from various sites.
Make sure you have the correct grid and plate current before tuning.
Depending how many watts in determines whats out. You can adjust with the RF out on your radio. (i.e. example. 20 watts= 200 watts, 30 watts =300 watts..etc.)Use a dummy load.
Again, get the manual if you don't already have one and follow it. Good luck.
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K0RKS
Member

Posts: 12




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« Reply #4 on: May 07, 2002, 03:13:27 AM »

Hi Sam,

     I have the SB220 Manual, I can scan the tune up pages and email if you want. It's easy I have used it with kenwood Tube Rigs and now Kenwood 570D. I run mine at about 1000 to 1200 with a 100 to 120watts PEP drive (Not to work the Green Monster too hard). If you want less just drive it with less 50 to 75 should work out to 500 or so. BTW you can work 17meters on the 15 meter band control. 20,40,80&75 Meters are the highest wattage, 15 and 10 Meters are less output. I guess mine was maximized for the lower bands. Which is fine thats where I use it. Hi
KB0ADB@Yahoo.com
73 Ron
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