Filters
filters — pre-owned
Browse 352 filters — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.
Pyramid BRF-1601 VHF Notch Filter Band Reject 150-174MHz - TUNING REQUIRED
This is a high-quality, passive RF device used at repeater sites and base stations to eliminate a specific, narrow source of interference while allowing all other frequencies to pass through. It is an ideal solution for resolving issues with a single interfering carrier.
Collins Radio RF Filter 111 to 378 MHz
This is a used RF filter made by Collins Radio. This is marked 111 to 378 MHz. This is in good condition.
ANTIQUE NATIONAL IMPEDAFOMER TRANSFORMER - HARD DO TO GET
A picture is worth a thousand words so take a look as that is the actual item and accessories you will receive. Why wait, use Buy It Now and get it for a very low price. LOCAL PICKUP FREE. LOOK PICTURE.
ROCKWELL International COLLINS - MECHANICAL FILTER - p/n 526941000 - F500Y70 AM
I am not an operator and don’t have the knowledge to fully test myself. Sold as is. Everything you see in the pictures is what is included in this lot. We of course will get them out as fast as we can.
18.1 7.0-7.5 MHZ 40 METER HAM BAND CRYSTAL FOR DRAKE R4 R-4A R-4B R-4C
DRAKE R4 R-4A R-4B R-4C.
37.1 26.0-26.5 MHZ SHORTWAVE BAND CRYSTAL FOR DRAKE R4 R-4A R4-B R4-C T-4X
37.1 26.0-26.5 MHZ SHORTWAVE BAND CRYSTAL. DRAKE R4 R-4A R-4B R-4C T-4X.
Heil Sound Ham Radio PTT Headset With Case (good condition)
32.6 21.5 - 22.0 MHZ 13M SHORTWAVE BAND CRYSTAL FOR DRAKE R4 R-4A R-4B R-4C
32.6 21.5 - 22.0 MHZ 13M SHORTWAVE BAND CRYSTAL. DRAKE R4 R-4A R-4B R-4C.
15.1 4.0-4.5 MHZ SHORTWAVE BAND CRYSTAL FOR DRAKE R4 R-4A R-4B R-4C
15.1 4.0-4.5 MHZ SHORTWAVE BAND CRYSTAL. DRAKE R4 R-4A R-4B R-4C.
MFJ-704 Low Pass Filter - 0-30 MHz - 1.5 KW CW - Impedence: 52 Ohms
Impedence: 52 Ohms. 0-30 MHz - 1.5 KW CW -. Low Pass Filter -.
28.1 17.0 - 17.5 MHZ SHORTWAVE BAND CRYSTAL FOR DRAKE R4 R-4A R-4B R-4C
28.1 17.0 - 17.5 MHZ SHORTWAVE BAND CRYSTAL. DRAKE R4 R-4A R-4B R-4C.
17.6 6.5-7.0 MHZ SHORTWAVE BAND CRYSTAL FOR DRAKE R4 R-4A R-4B R-4C
17.6 6.5-7.0 MHZ SHORTWAVE BAND CRYSTAL. DRAKE R4 R-4A R-4B R-4C.
Bencher Inc. YA-1 Ham Radio Low Pass Filter 50 ohm 1.8-30 MHz - Good Condition
The Bencher Inc. YA-1 Ham Radio Low Pass Filter is a versatile accessory designed for radio communication enthusiasts.
Autek Research QF-1A - SSB/CW/AM Filter Untested
The Autek Research QF-1A is a universal high-pass filter designed for AM radio communication systems. This filter is specifically designed to enhance the signal quality of single-sideband (SSB) and continuous wave (CW) radios, offering improved performance and clarity. With its high-pass filtering capabilities, this Autek Research filter is a valuable component for radio communication enthusiasts looking to enhance their listening experience.
Lot of 2 Vintage E.F. Johnson Nye Low Pass Filters Ham Radio RF TVI
Sold as is. everything you see in the pictures is what is included in this lot. we of course will get them out as fast as we can. we will help resolve whatever issue you are having. we try very hard to provide good communication and always strive for everyone to have a positive experiences!
800-1900Mhz 30W 2 Way SMA Power Divider MECA 802-S-1.9-M01 USA Stock, used
You save $19.00
Drake TV-3300-LP 1000 Watt Low Pass Filter (Tested)
The Drake TV-3300-LP 1000 Watt Low Pass Filter is a compact and lightweight unit specifically designed for radio communication equipment. Made by the trusted brand Drake, this filter is compatible with various brands and models, making it versatile for different communication devices. With its high-pass filter capability and tested performance, it is a reliable option for enhancing the quality of your radio communication system. Made in the United States, this filter is a valuable addition for those looking to optimize their communication setup.
Used Drake TV-3300-LP 1000 Watt Low Pass Filter for Ham Radio HF, (VERY NICE!)
The Used Drake TV-3300-LP 1000 Watt Low Pass Filter is a compact and lightweight unit designed for ham radio HF applications. in good used condition with no major defects. This item will be. marks / wear to fabric and friction surfaces.
Ten-Tec 81532 Variable Bandwidth Crystal Filter for Delta Argonaut II (nice)
This filter was removed from a Ten-Tec Delta II (model 536).
Used Heathkit SSB Crystal Filter Part 404-328
Used. Untested. Removed from equipment to be scrapped
VINTAGE LOW PASS FILTER TRANSFORMER 175-10-00-20 L-2332 - Military
A picture is worth a thousand words so take a look as that is the actual item and accessories you will receive. LOW PASS FILTER. LOCAL PICKUP IS FREE ZIP CODE 21784, MARYLAND. Why wait, use Buy It Now and get it for a very low price.
MFG-704 Low Pass Filter
I got this in a lot, not sure how it wouldn’t work. Should be okay!
Industrial Communications Engineers Model 475 Ham Rado AC Line Filter (nice)
HAM Radio Low Pass Filters QTY 2 R.L Drake, Ameco
TWO Ham Radio Low Pass Filters.
Autek Research QF-1A - SSB/CW/AM Filter, Untested
You are bidding on an Autek Research Model QF-1A, SSB/CW/AM Filter for ham radio use. It is in complete original condition, but is untested by me, as I am not a ham. There is tape residue left on the top where there was a label: from estate of (ham call sign). I did not completely remove it, as I was afraid of scratching the finish. It measures 6 1/2 by 2 1/2 by 3/8 inches in size, not counting the controls or feet. It should be a useful item for your rig. Shipping weight is 3 pounds. Please see my other auctions for more interesting radio and audio items, and tubes.
Heathkit 404-200 Crystal Filter
Used. Removed from unit to be scrapped.
Sprague Type JX37 RFI Radio Noise Filter 3-30VDC 10 Amps
Up for sale is a Sprague Type JX37 RFI Radio Noise Filter.
You save $4.99
Arris Low Pass Trap Filter 550 MHz (P/N: 1021634)
Fast Shipping High‑quality RF low pass trap filter designed to attenuate frequencies above 550 MHz while allowing lower‑frequency signals to pass. Ideal for use in CATV, telecommunications, and broadband RF systems to reduce interference, improve signal quality, and protect downstream equipment. Suitable for system maintenance, network installations, and signal conditioning applications. C5F4 Non Data Device
Collins Mechanical Filter 535 KC 3.7 KC Raytheon S363-1806P1 Radio Communication
Manufacturer: Collins / Raytheon. This unit is marked Raytheon part numberS363-1806P1 and labeled with a nominal center frequency of535 KC and bandwidth of3.7 KC. Raytheon Part Number: S363-1806P1. Nominal Center Frequency: 535 KC.
Nihon Dempa Kogyo Co. YF270C 270 KHz Crystal Filter
This is a used Crystal Filter made by Nihon Dempa Kogyo Co. The part number is YF270C. This is 270 KHz Band Pass Filter. This is in good condition.
Vintage Lot of 3 Willcox Electronic 455-KC USB Band Pass Filter Part No 97476
Sold as is. everything you see in the pictures is what is included in this lot. we of course will get them out as fast as we can. we will help resolve whatever issue you are having. we try very hard to provide good communication and always strive for everyone to have a positive experiences!
35.6 24.5-25.0 MHZ 12 METER HAM BAND + WWV CRYSTAL FOR DRAKE R4 R4-A R4-B R4-C
DRAKE R4 R-4A R-4B R-4C. 35.6 24.5-25.0 MHZ WW + 12M HAM BAND HAM BAND CRYSTAL.
Shure Line Matching Transformer Model No A97A
Shure line matching transformer #A97A. In used condition with light scratches on the case from use. Fast and free shipping is included.
Motorola NLN7834A Minitor 2/II Director 2/II Tone Filters/Cards/Reeds 340+ avail
For sale is one (1) Motorola NLN7834A (or compatible variant) Permacode Active Filter. These are also known as "tone filters", "tone cards", or "tone reeds". They are compatible with the Motorola Minitor 2(II) and Director 2(II) tone and voice pagers.
AMECO TV/FM Interference HI-Pass Filter HP-75T 75 OHMS 0-52mHZ
USED Drake TV-42-LP Low Pass Filter 30MHz 100 Watts Max Very Nice W/Paperwork
This is a USED Drake TV-42-LP Low Pass Filter 30MHz 100 Watts Max Very Good Condition with Paperwork.
MFJ-704 low pass filter
working condition
DRAKE TV-1000LP LOW PASS FILTER
12.6 1.5 - 2.0 MHZ 160M HAM BAND CRYSTAL FOR DRAKE R4 R4-A R4-B R4-C
12.6 1.5 - 2.0 MHZ 160M HAM BAND CRYSTAL. DRAKE R4 R-4A R-4B R-4C.
Collins 250 F 500 Mechanical Filter for ARC-38 | Vintage Radio Part
Sold as is. everything you see in the pictures is what is included in this lot. we of course will get them out as fast as we can. we will help resolve whatever issue you are having. we try very hard to provide good communication and always strive for everyone to have a positive experiences!