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 POWERSUP - MFJ-4225MV 25 AMP SWITCHING POWER SUPPLY 
- I have available a very good condition MFJ-4225MV power supply. The output is adjustable from 9 to 15 VDC. There are two outputs, one being binding posts, which will give you up to the full 25 amp capability, and a cigarette lighter receptacle, which can give you up to 7 A of output. This is priced at $80 plus shipping in the USA only.
- Listing #1763555 - Submitted on 03/30/26 by Callsign K3DUA - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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 TEST - BIRD 50 WATT DUMMY LOAD
- BIRD dummy load, model 8085, a 50 watt loads, good from DC to 3.5 GHz. This load currently has an N female connector on it (which is recommended for this full frequency range) but if you want some other connector, let me know your preference. $50 shipped in the USA.
- Listing #1761731 - Submitted on 03/12/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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- TEST - RACK MOUNTED BIRD WATTMETER
- I have available a good condition BIRD rack mounted wattmeter, model 4521. The line-section currently has N female connectors on it, but I can change them to UHF females if you prefer, let me know your preference..
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This is priced at $195 plus shipping in the USA only.
- Listing #1762108 - Submitted on 03/15/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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- MISC - KENWOOD ICOM COLLINS & DRAKE ETC FILTERS
- MAKE AN OFFER - - MAKE AN OFFER.
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These filters are used (solder on some terminals). They have all been tested and work correctly.
Prices include shipping in the USA.
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KENWOOD FILTERS
YG-455CN-1 - - $85
YK-88C-1 - - $70
pc board (X48-3110-00) from a TS-50S with one stock SSB filter and room for an optional CW filter - $50
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ICOM FILTERS
FL-32A - - $65
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DRAKE FILTERS
SL-500 - - $85
C-F Networks model 5.64-2.4L - $60
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INTERNATIONAL RADIO FILTERS (INRAD)
#99 455.7 kHz, 400 Hz - - $80
#760 - 9000.75 kHz, 250 Hz, on pc board - - $90
YF33H18, 3395 Khz - - $50
YF-88HCW - - $50
IR-88H1.8BC - $50
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COLLINS FILTERS
F455FA21 6411 (526 9427 00) - - $75
F455Z4 1V2 (265 9364 00) - - $75
- Listing #1762971 - Submitted on 03/23/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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- MISC - DOW-KEY SMA COAX RELAYS
- I have available for sale the following Dow-Key, SPDT, SMA coax relays.
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These are model 403-2803, which have a 28 vdc coils. I have 5 that are new at $35 each, and 3 used (some solder on the coil terminals) at $30 each.
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Shipping is extra. Buy 3 or more and shipping is free. Shipping only to the USA.
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BUY ALL 8 AND THE "PACKAGE PRICE" IS $200 SHIPPED
- Listing #1762110 - Submitted on 03/15/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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- BOOKMAG - BIRD 43 OWNER'S MANUALS
- TWO SOLD - - 12 left.
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I had 14, I now have 12 original manuals for the BIRD 43 wattmeter. A few are wrinkled or have been folded, but all are complete and readable.
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$12 each including mailing in the USA. Each additional manual will be an additional $10.
- Listing #1762109 - Submitted on 03/15/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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- MISC - BIRD COAX SWITCH - REDUCED
- MAKE AN OFFER - - MAKE AN OFFER
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One BIRD model 74, 6-position coax switch, with a NON-STANDARD KNOB and NO DIAL PLATE. $125 shipped in the USA.
- Listing #1762972 - Submitted on 03/23/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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- TEST - F/S BIRD ELEMENTS FOR MODEL 43
- I have the following used, and tested, BIRD (or Coaxial Dynamics equivalent) elements available:
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SHIPPING IN USA FOR ONE ELEMENT IS $8. ADD $1 FOR EACH ADDITIONAL ELEMENT.
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BUY 4 ELEMENTS, OR MORE, AND SHIPPING IS FREE.
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0.45-2.5 MHz
- 1000P, 5000P, 10000P - $135 each
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2-30 MHz
None at this time
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ALL VHF & UHF elements - - $45 each
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25-60 MHz
- 100A
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50-125 MHz
- 5B, 10B, 25B, 50B, 100B, 2500B(PEAK), 10KB(PEAK)
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100-250 MHz
- 5C, 10C, 25C, 50C, 100C, 250C
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200-500 MHz
- 5D, 10D, 25D, 50D, 100D, 250D
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400-1000 MHz
- 5E, 10E, 25E, 50E, 100E, 250E
- Listing #1762417 - Submitted on 03/18/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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- TEST - BIRD 2500 WATT DUMMY LOAD
- I have available for sale a BIRD 2500 watt dummy loaded, model 8892-300. This load came to me with a 1-5/8 inch flange interface sticking out from the load. I have added an adapter plate which allows me to use any BIRD Quick Change connector. Currently there is an LC female connector on it, but I can change that to whatever series connector you would like - - let me know your connector preference. This load also has the optional temperature sensor switch (located on the front above the input coax connector.)
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See the attached picture.
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With the addition of a BIRD BA-300 fan unit, this load instantly becomes a 5000 W dummy load. I do not have this option available, but they are on eBay.
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Because of this load's RF input connector protruding out the front, there would be an increased possible damage if this were shipped - - so I WILL NOT SHIP THIS LOAD. I can deliver this in person at any local hamfest or at the Dayton Hamvention.
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The price is $1250.
- Listing #1763117 - Submitted on 03/25/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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- MISC - COAX RELAYS - REDUCED
- I have available a selection of coax relays.
All have been tested and they work correctly. See the picture.
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1. In the upper right corner there are 4 black relays made by Dow-Key. THESE 4 HAVE BEEN SOLD, but I just found 2 more relays in the basement - - $25 each plus shipping.
2. In the lower right corner there are 3 silver relays made by Dow-Key. These are all BNC relays with 24-28 VDC coils. $25 each plus shipping.
3. In the lower left corner there is an Advanced coax relay with UHF connectors and a 24 VDC coil. $30 plus shipping.
4. In the upper left corner there are 2 BNC coax relays with 26 VDC coils. $25 each plus shipping.
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QUANTITY DISCOUNTS AVAILABLE - - INQUIRE.
- Listing #1763118 - Submitted on 03/25/26 by Callsign K3DUA, Modified on 03/30/26 - IP: pool-173-69-135-23.bltmmd.fios.verizon.net
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