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FS: 275V regulator 4 516F-2 and PM-2 PS: Due to old 1956 design of 516F-2, or PM-2 power supply for Collins KWM-2 (A) or 32S series transmitters runs on 125V AC power Voltage, the 516F-2 supply should deliver 275V Low Volt becomes 330V Plus minus during receive mode of KWM-2(A), vacuum tubes get 330V which will shorten life of tubes and cause extreme hot temperatures affect other parts. KWM-2(A)and 32S series transmitter get lot of heat problems. I have a solution to keep the LV to exactly 275V either transmit or receive mode.Using 500V MOSFET and series of Zener regulators,LV is now tightly regulated which helps keep the VFO with no drift and no audio hum as it works as ripple filter.The board is 22mm x 30 mm by size, made with SMD components and can be fit to the sidewall of power supply. Price is $40 plus $6 for USPS. two or more it has to be shipped by priority, price is $13.check to my QRZ.com address.Other output V,150V or 250V or 300V if needed.; Listing #1732006 - Submitted on 06/06/25 by Callsign K6HM - IP: 75-37-192-218.lightspeed.lsatca.sbcglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FS: Drake tr-5 TR-7 Power Supply: Drake TR-7 TR-5 Power Supply working as of 2 months ago. No returns Unit is heavy $125.00 plus shipping lower 48. Thanks; Listing #1731994 - Submitted on 06/06/25 by Callsign KA9NOK - IP: 152.44.65.58; Click to Contact -- Send this Ad to a Friend
MFJ 4035MV ADJUSTABLE POWER SUPPLY: This 35 amp adjustable power supply is in very nice condition. It’s clean and still working just fine. It has no markings on it has no exposure to animal hair or smoke. $115 shipped. I take paypal, Postal MO and check.; Listing #1731963 - Submitted on 06/06/25 by Callsign W6XI - IP: ip68-109-162-111.ph.ph.cox.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Heathkit HWA-7-1 QRP Power Supply: Heathkit HWA-7-1 power supply, produced for Heathkit's line of QRP transceivers. Puts out the rated voltage on a voltmeter but has not been tested under load. Good cosmetic condition. $40. Shipping included via USPS Priority Mail (CONUS only). Payment via PayPal.; Listing #1731950 - Submitted on 06/06/25 by Callsign WA8CDU - IP: syn-172-222-082-173.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
MFJ 4245 MV Power Supply For Sale: MFJ 4245 MV, 45 amp Power Supply For Sale:
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The MFJ 4245 MV supplies plenty of current
to take care of all of your ham needs.
Large 3 in. dual meters are brightly illuminated
to make it easy to monitor load voltage and
current. An internal fan cools the power supply.
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Features include:
* 45 amps surge, 40 amps continuous at 13.8 V DC
* Less than 35mV peak-to-peak ripple
* 2 pair of rear quick connectors
* Load regulation is better than 1.5 percent
* Over voltage protection
* Over current protection
* Automatic shutdown on fault load
* Internal cooling fan with "fan on" LED
* Switching AC input voltage 110 V AC at 47-62 Hz
or 220 V AC at 47-63 Hz
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Even though it is a switching type supply, it
is quiet. I can not find any noise.
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This one works 100% like it should.
Cosmetically, it looks very close to new.
No scratches or defects.
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Buy this nice unit, with manual, for $150
plus shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1731936 - Submitted on 06/06/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
MFJ 4035MV, 35 amp Power Supply FS: MFJ 4035MV, 35 amp Power Supply For Sale:
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MFJ 4035MV power supplies are excellent for
powering your rig and accessories. Weighing
in at a massive 19.2 lbs., the transformers
in these power supplies make them super heavy
duty! They deliver 35 amps maximum and 30 amps
continuous without even flexing their muscles.
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They are highly regulated and ripple voltage
is less than 30 mV. There is no RF hash! They
are fully protected with over-voltage, fold
back short circuit, and over-temperature
protection.
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You get front panel adjustable voltage from 1
to 14 Vdc. Front panel meters let you monitor
voltage and current. Whisper-quiet fan speed
increases as load current increases, keeping
components cool.
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This one works 100%, and looks like new.
No scratches or defects.
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Buy it with manual for $125 plus shipping
from Florida, or pick up near Ocala.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1731935 - Submitted on 06/06/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Wall Wart Power Supplies / Chargers FS: Wall Wart" Power Supplies / Chargers For Sale:
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All of these are "regular" wall warts - not the new noisy
switching type. Use one of these, and you will not need
to put up with all of the interference.
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Kenwood Charger for TH-225 HT; $10
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Yaesu NC-9 B Charger
13 V DC at 45 ma, 2.5 mm plug; $12
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There are many uses for the 12 volt DC variety.
These all have 2.1 mm coaxial connectors with
center positive.
12 V DC at 1200 ma $19
12 V DC at 1000 ma $17
12 V DC at 780 ma $15
12 V DC at 750 ma $15
12 V DC at 600 ma $14
12 V DC at 400 ma $12
12 V DC at 200 ma $10
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12 Volt AC at 1 amp - Note it is AC, not DC. $15
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9 V DC at 50 ma $8
9 V DC at 400 ma $12
9 V DC at 500 ma $13
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Prices do not include shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1731934 - Submitted on 06/06/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Send this Ad to a Friend
Eico Model 1020 Power Supply For Sale: Eico Model 1020 Power Supply For Sale:
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The Eico 1020 is a dual voltage power supply,
providing either 6 volts or 20 volts at a
maximum current of 1/2 amp. It has extremely
low ripple.
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An analog meter can be switched between 6 V DC
and 20 V DC.
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It would make a great bench supply.
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This one works as it should, and looks fine also.
Buy it with paper work for $20 plus shipping from
Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1731933 - Submitted on 06/06/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Heathkit HP-1144 Power Supply: Here is a nice, clean, working example of a Heath HP-1144 power supply.
$125 plus shipping CONUS.; Listing #1731831 - Submitted on 06/05/25 by Callsign K9VP - IP: 172.56.252.88; Click to Contact -- Send this Ad to a Friend
Heathkit HP-23C Power Supply: Unmodified and working as intended. Low B+ is wired for 300 volts. Top and bottom covers included. $125 plus shipping CONUS.; Listing #1731830 - Submitted on 06/05/25 by Callsign K9VP - IP: 172.56.252.88; Click to Contact -- Send this Ad to a Friend