Inrad manufacturers custom designed, high performance quartz crystal filters for communications receivers and transceivers. Including ICOM, Yaesu, Kenwood, Ten-Tec, Collins, Drake, Heathkit, DZ, AOR, as well as special designs for experimental applications. If you don't see the filter you are looking for here please visit Inrad's Web Site at www.inrad.net to find the product you need then e-mail sales with your requirements for our special pricing.

 Many Inrad filters are stocked but due to the vast number and variety we don't stock them all. If a filter is not in stock it can usually be shipped in 3-4 business days.

 Need inatallation of your INRAD filters? Turner Radio (661-945-9097) in Lancaster, CA can help with your installation needs. The DX Store is not affiliated with Turner Radio.



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On Inrad Roofing Filters to United States ONLY


 Icom IC-756 PRO/II/III Roofing Filters: These roofing filter can help reduce the third order Intermodulation from multiple strong signals in the 2 to 20 kHz region either side of the tuned frequency. For more detailed information on roofing filters please read "A few words about Roofing Filters"

 This mod is significantly more challenging to perform than Inrad's other roofing filter kits and requires removal of some SMT components, cutting of board traces, and modifying a shield, and putting small connectors on teflon RG-178 coaxial cables. It should only be performed by those with considerable technical skills who are comfortable working around delicate electronics and small surface mount components.

 The modification may cause some frequency response variation in the band scope screen output compared to an unmodified unit. This is due to impedance variations outside of the roofing filter passband. A two resistor network has been added before the filter to minimize this effect.

Part Number Desc Price USA Orders Non-USA Orders
PRO3-Roof IC-756 PRO III(3) Roofing Filter.
Installation instructions
$200.00

PRO2-Roof IC-756 PRO II(2) Roofing Filter.
Installation instructions
$200.00

PRO-Roof IC-756 PRO Roofing Filter.
Installation instructions
$200.00





 Yaesu FT-1000MP/MKV/Field Roofing Filters: Inrad roofing filters can substantially reduce the third order Intermod from multiple strong signals in the 2-20kHz range on either side of the tuned frequency. For the FT-1000MP the mod is plug-in, with no soldering required and can be easily removed. For the Mark IV it will require soldering two connections. This mod applies to the new Field model also. For more detailed information on roofing filters please read "A few words about Roofing Filters" from Inrad.

Complete installation manual for the FT-1000MP & Mark IV.

NOTE: This unit cannot be installed if the Inrad 70MHz IF Mod is installed. You can only have one or the other installed, not both.

Part Number Desc Price USA Orders Non-USA Orders
1000MP/V-Roof Roofing Filter for Yaesu FT-1000MP, Mark V, Mark V Field. $175.00



 Yaesu FT-1000 & FT-1000D Roofing Filter: Inrad roofing filters can substantially reduce the third order Intermod from multiple strong signals in the 2-20kHz range on either side of the tuned frequency. Installation is simple and requires soldering the +12V and ground wires. One coax is moved and a coax jumper is added. For more detailed information on roofing filters please read "A few words about Roofing Filters" from Inrad.

Complete installation manual for the FT-1000 & FT-1000D.

Part Number Desc Price USA Orders Non-USA Orders
1000/D-Roof Roofing Filter for Yaesu FT-1000/FT-1000D $175.00





 Kenwood TS-950 Series Roofing Filters: The TS-950 roofing filter mod consists of a 6-pole, 4 to 5 kHz wide filter followed by a high dynamic range feedback amplifier. The amplifier provides enough gain to override the filter insertion loss.

 The IMD dynamic range will be improved 5 to 15 dB for some signal spacings. Also, the blocking dynamic range will be improved up to 10 dB for close in signals.

 The roofing filter mod inserts a narrow band crystal filter between the RF assembly and the IF board. Reducing the bandwidth at this point in the radio helps to keep strong off-frequency signals out of the second mixer, where they can cause intermodulation. Transmission is not changed, as it does not pass through the roofing filter.

 This mod will work in all versions of the TS-950.

For more detailed information on roofing filters please read "A few words about Roofing Filters"

Part Number Desc Price USA Orders Non-USA Orders
TS950-Roof TS-950 series Roofing Filter $200.00

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INRAD Filters for Elecraft K3
Part Number Desc Price USA Orders Non-USA Orders
701 400 Hz 8215 kHz CW 8-pole crystal filter
- Bandwidth: 400 Hz
- Center Frequency: 8125 kHz
- Mode: CW
- Shape Factor: 2.1
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
708 250 Hz 8215 kHz CW 8-pole crystal filter
- Bandwidth: 250Hz
- Center Frequency: 8215kHz
- Mode: CW
- Shape Factor: 2.1
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
709 2100 Hz 8215 kHz SSB 8-pole crystal filter
- Bandwidth: 2100Hz
- Center Frequency: 8215kHz
- Mode: SSB
- Shape Factor: 1.5
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
710 6000 Hz 8215 kHz AM 8-pole crystal filter
- Bandwidth: 6000Hz
- Center Frequency: 8215kHz
- Mode: AM
- Shape Factor: 1.5
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
711 1800 Hz 8215 kHz SSB 8-pole crystal filter
- Bandwidth: 1800Hz
- Center Frequency: 8215kHz
- Mode: SSB
- Shape factor: 1.5
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
716 2800 Hz 8215 kHz SSB 8-pole crystal filter
- Bandwidth: 2800Hz
- Center Frequency: 8215kHz
- Mode: SSB
- Shape factor: 1.5
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
718 1000 Hz 8215 kHz CW 8-pole crystal filter
- Bandwidth: 1000Hz
- Center Frequency: 8215kHz
- Mode: CW
- Shape factor: 1.6
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
725 13000 Hz 8215 kHz FM 8-pole crystal filter
- Bandwidth: 13000Hz
- Center Frequency: 8215kHz
- Mode: FM
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
727 1500 Hz 8215 kHz SSB 8-pole crystal filter
- Bandwidth: 1500Hz
- Center Frequency: 8215kHz
- Mode: SSB
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
728 500 Hz 8215 kHz CW 8-pole crystal filter
- Bandwidth: 500Hz
- Center Frequency: 8215kHz
- Mode: CW
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00





Inrad Filters for Collins 75S-3B/C
Part Number Desc Price USA Orders Non-USA Orders
705-S 500 Hz 455 kHz CW 7-pole Collins filter
- Bandwidth: 500 Hz
- Center Frequency: 455.0 kHz
- Mode: CW
- Shape Factor: 2.5
- Zin/Zout: 2000 ohms // 30 pF
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$120.00
706 2500 Hz 455 kHz SSB 8-pole Collins filter
- Bandwidth: 2500Hz
- Center Frequency: 455.0kHz
- Mode: SSB
- Shape Factor: 2.6
- Zin/Zout: 2000 ohms/30pF
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
707 5800 Hz 455 kHz AM 8-pole Collins filter
- Bandwidth: 5800Hz
- Center Frequency: 455.0kHz
- Mode: AM
- Shape Factor: 1.7
- Zin/Zout: 2000 ohms/30pF
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
712 300 Hz 455 kHz AM 7-pole Collins filter
- Bandwidth: 300Hz
- Center Frequency: 455.0kHz
- Mode: CW
- Shape Factor: 2.5
- Zin/Zout: 2000 ohms/30pF
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$120.00
720 2000 Hz 455 kHz SSB 8-pole Collins filter
- Bandwidth: 2000Hz
- Center Frequency: 455.0kHz
- Mode: SSB
- Zin/Zout: 2000 ohms / 30 pF
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
724 3800 Hz 455 kHz AM 7-pole Collins filter
- Bandwidth: 3800Hz
- Center Frequency: 455.0kHz
- Mode: AM
- Zin/Zout: 2000 ohms/30pF
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$140.00
726 2900 Hz 455 kHz SSB 8-pole Collins Filter
- Bandwidth: 2900Hz
- Center Frequency: 455.0kHz
- Mode: SSB
- Zin/Zout: 2000 ohms/30pF
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$160.00
729 1000 Hz 455 kHz CW 8-pole Collins filter
- Bandwidth: 1000Hz
- Center Frequency: 455.0kHz
- Mode: CCW
- Zin/Zout: 2000 ohms/30pF
- Typical Insertion Loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB
$160.00
Note: Bandwidth is measured by the manufacturer at -3 dB; shape factor measured at -60/-6 dB.





Inrad Filters for Drake R-4C
Part Number Desc Price USA Orders Non-USA Orders
2611.2 6000 Hz 5695.0 kHz AM 8-pole crystal filter
- Bandwidth: 6000Hz
- Center Frequency: 5695.0kHz
- Mode: AM
- Shape Factor: 1.7
$130.00
2611.1 6000 Hz 5645.0 kHz GUF-1 8-pole crystal filter
This filter (also known as GUF-1) is a superior replacement for the original 4-pole unit in the Drake R-4C. Exceptional improvement. Installation requires drilling three small holes in the radio chassis.
- Bandwidth: 6000Hz
- Center Frequency: 5645.0kHz
- Mode: GUF-1
- Shape Factor: 1.8
$130.00
2612.1 8000 Hz 5645.0 kHz GUF-1 8-pole crystal filter
This filter (also known as GUF-1) is a superior replacement for the original 4-pole unit in the Drake R-4C. Exceptional improvement. Installation requires drilling three small holes in the radio chassis.
- Bandwidth: 8000Hz
- Center Frequency: 5645.0kHz
- Mode: GUF-1
- Shape Factor: 1.7
$130.00
2600.2 125 Hz 5695.0 kHz CW 8-pole crystal filter
- Bandwidth: 125Hz
- Center Frequency: 5695.0kHz
- Mode: CW
- Shape Factor: 2.5
$130.00
2601.2 250 Hz 5695.0 kHz CW 8-pole crystal filter
- Bandwidth: 250Hz
- Center Frequency: 5695.0kHz
- Mode: CW
- Shape Factor: 2.0
$130.00
2603.2 500 Hz 5695.0 kHz CW 8-pole crystal filter
- Bandwidth: 500Hz
- Center Frequency: 5695.0kHz
- Mode: CW
- Shape Factor: 1.9
$130.00
2608.2 1800 Hz 5695.0 kHz SSB 8-pole crystal filter
- Bandwidth: 1800Hz
- Center Frequency: 5695.0kHz
- Mode: SSB
- Shape Factor: 1.7
$130.00
Inrad Filters for Drake TR-4
Part Number Desc Price USA Orders Non-USA Orders
1901 2500 Hz 9000.0 kHz USB 8-pole crystal filter
- Bandwidth: 2500Hz
- Center Frequency: 9000.0kHz
- Mode: USB
$130.00
1902 2500 Hz 9000.0 kHz LSB 8-pole crystal filter
- Bandwidth: 2500Hz
- Center Frequency: 9000.0kHz
- Mode: LSB
$130.00
Inrad Filters for Drake TR-6
Part Number Desc Price USA Orders Non-USA Orders
1906 6000 Hz 9001.0 kHz AM 6-pole crystal filter
- Bandwidth: 6000Hz
- Center Frequency: 9001.0kHz
- Mode: AM
- Zin/Zout: 50 ohms
$130.00
Inrad Filters for Drake TR-7/R-7
Part Number Desc Price USA Orders Non-USA Orders
1710.2 6000 Hz 5645.0 kHz AM 8-pole crystal filter
- Bandwidth: 6000Hz
- Center Frequency: 5645.0kHz
- Mode: AM
- Shape Factor: 1.7
$130.00
1701.2 250 Hz 5645.0 kHz CW 8-pole crystal filter
- Bandwidth: 250Hz
- Center Frequency: 5645.0kHz
- Mode: CW
- Shape Factor: 2.1
$130.00
1702.2 400 Hz 5645.0 kHz CW 8-pole crystal filter
- Bandwidth: 400Hz
- Center Frequency: 5645.0kHz
- Mode: CW
- Shape Factor: 1.8
$130.00
1708.2 1800 Hz 5645.0 kHz SSB 8-pole crystal filter
- Bandwidth: 1800Hz
- Center Frequency: 5645.0kHz
- Mode: SSB
- Shape Factor: 1.7
$130.00
1709.2 2100 Hz 5645.0 kHz SSB 8-pole crystal filter
- Bandwidth: 2100Hz
- Center Frequency: 5645.0kHz
- Mode: SSB
- Shape Factor: 1.7
$130.00





Inrad Filters for Heathkit
Part Number Desc Price USA Orders Non-USA Orders
2708 1800 Hz 3395.0 kHz SSB 8-pole crystal filter
- Bandwidth: 1800Hz
- Center Frequency: 3395.0kHz
- Mode: SSB
- Zin/Zout: 2000 ohms
$130.00