[Heath] SB-220 Amp, Parts, manuals and more FS

[Ken, W8EK]

Heath Items For Sale:

Heath SB-220 HF Linear amplifier, Miscellaneous Heath
parts, original Heath manuals, and other miscellaneous
Heath items:
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Heath SB-220 Amateur Radio (Ham) HF Linear Amplifier:

The SB-220 uses a pair of 3-500 tubes to deliver close to legal
limit output on the HF ham bands. It is a proven design that
has been copied by many others.

This SB-220 works fine and looks very close to new, with no
known defects.

In addition, it has recently had most of the Harbach improvements
added including a new set of filter capacitors with improved
equalizing/bleeder resistors, new metering/rectifier board, "Soft
Key" board to reduce keying voltages and currents, Soft Start
to reduce incoming power surges, glitch resistor, protective
diodes, new HV metering resistors, and more. All metering
and equalizing resistors are precision 1% resistors.

This amp produces in the vicinity of 1200 Watts output,
depending on band.

This is a really nice, pristine amp.
Cosmetically, it is perfect.  No scratches or defects.
Please e-mail for more details.

With paper work for $900. Pickup near Ocala, FL, would
be preferred.
Shipping can be arranged if absolutely necessary.

Obviously, an amateur radio license is necessary to
operate this amp.
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Resistors for high voltage metering

Do you have a linear amplifier that has an
error in the high voltage reading? Maybe you do
not even know it has an error!

Heath used three 4.7 meg resistors in the SB-220/221
and also in the SB-200/201 amplifiers. Almost all
of these resistors are out of tolerance today, partially
because of their age, but also because their voltage
rating was exceeded.

I was able to obtain a quantity of new resistors that
are 4.7 Meg, 1% tolerance, 2 watt, and are rated to
handle the high voltage. This compares to the original
resistors furnished by Heath that were 4.7 Meg, 5%,
1 watt and about 400 volts.

Note that these can be used in any amp that uses the
4.7 Meg resistors -- not just Heath amps.

Buy a set of three for $3 plus shipping from Florida.
Combine with other items to save shipping!

I also have 0.82 ohm precision resistors, as
used by the SB-220/200, available.
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Heath SB-220 original metering and rectifier PC board:

This is the original board from an SB-220 HF amp that was replaced
with one of the Harbach boards. Almost all of the resistors on this
board drift over time, and result in inaccurate meter readings. This
board has had ALL of the metering resistors replaced with 1% or 2%
precision resistors. The 4.7 Meg resistors in the high voltage
measuring section have been replaced with resistors rated to take the
high voltage, as well as being more precision. This board includes
the 10 watt zener diode. This effectively makes the board very
similar to the Harbach board, which they sell for $38. Buy this
board for only $25.
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Original metering rectifier board, as above, but does NOT have the
10 watt zener diode included. $20
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Original 10 watt 5.1 volt zener diode for SB-220. $10
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SB-220 grid choke (1 mh, Part # 45-4, RFC 4 and 5)
These often go up in smoke when there is a tube problem.
This one is fine, with no problems. $5
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Note that these SB-220 parts are the same as used in the SB-221
HF amp as well.
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ORIGINAL Heath manuals:

These are original manuals only, for Heath equipment.
They are in very nice condition. Schematic is in the book.

GD-600 Photoelectric Light Switch, $4
HD-1234 Coaxial Switch, $3
HD-1481 Remote Coax Switch, $7
HD-4040 Terminal Node Controller, $8
HD-4040-2 TNC HF Header Kit, $2
HM-2102 VHF Wattmeter, $6
HN-31 Cantenna RF Dummy Load, $5
HW-2021, 2 meter HT, No check marks, $9
HW-2036, 2 meter transceiver, partial manual, $8
IN-17 Decade Resistance Box, $4
RS-1 Resistance Substitution Box, $5
SG-7 SDignal Generator, $8
T-3 Visual-Aural Signal Tracer, $8

These are original Heath manuals only.
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I also have many other accessories available such as many
different types of microphones, HTs, VHF and UHF rigs, HF
and VHF/UHF antennas, connectors, miscellaneous accessories,
etc.
Just too many to list here. Please e-mail your requests.

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Prices do not include shipping from Florida.

Thanks.

73,

Ken, W8EK

Ken Simpson
E-mail to W8EK at FLHam.net or W8EK at arrl.net
Voice Phone (352) 732-8400



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