Products

ELF Antennas

L-600S - H-Field Loop Receiving System

Price: $380.00
Quantity:
The L-600S is designed with the serious experimenter in mind. The L-600S is an effective H-Field receiving system for use in EMI noisy areas, or within E-field attenuated areas. The directional loop design in combination with the receiver's high pass filtering, greatly reduces unwanted noise and hum. Frequency response is 300 Hz to 30 kHz (broadband). The 24 inch square PVC loop may be broken down into components for storage. The loop antenna and receiver may be hand held or tripod mounted. Switchable high pass filter for noise reduction. Tape recorder/sound card and earphone outputs included with the ELF receiver.
Specifications – L-600 VLF Receiver
Frequency Response

300 Hz to 30 kHz flat response +/-3dB (zero impedance amplifier) (system sensitivity 375 mV/V/m)
1.5 kHz (highpass, single pole) in HP mode

Audio Output 300 m/W maximum, 4-32 ohms (earphones)
10k ohms (recorder or sound card)
DC Power 9 volt, 7 – 10 mA typical , 100mA full audio output
Specifications – L-600 VLF Loop Antenna
Loop Size 24 inch square / 12” handle, 1.5 lb (PVC pipe)
Loop Self Resonance 23kHz
Loop Inductance/ resistance 28 mH / 50 ohms
Heff 6.7mm @10kHz

 


LF/VLF Antennas

L-111 - LF/VLF Converter/Antenna System

Price: $230.00
Quantity:

The L-111 System provides full coverage of the LF spectrum from less than 10 kHz to 530 kHz. The L-111 combines the proven L-400B active antenna with a sensitive LF to HF converter. The externally mounted LF converter contains a low impedance wide dynamic range balanced mixer, with RF, IF and local oscillator filtering. The converter's high L.O. rejection greatly improves reception below 10 kHz and its sharp roll-off filter characteristics eliminate BC intermodulation. Receiver tuning is between 4.0 MHz and 4.5 MHz. Supplied with fifty feet of RG-174/U cable. AC supply included. An internal voltage regulator provides better than +/- 1Hz frequency stability.

L-111 Specifications
Antenna Probe Size 26 inches long, 1 inch diameter PVC
Coupler/Converter Size 4.19"L x 2.74"W x 1.57"H
IF Output Frequency 4 to 4.5 MHz
Frequency Response 10 kHz to 530 kHz +/-5 dB
IF Rejection 80 dB typical
E Field Sensitivity -6 dB  (L-400B E-probe)
Output Impedance 50 – 100 ohm
Input/Output Jacks RCA type, BNC optional
Operating Temperature -20°F to +130°F
Weatherproofing Antenna probe tested to 2 atmospheres (-66 ft)
Regulated DC Power (1Hz stable) 12 – 18 Volt, 35 mA, NEDA 1604 (2)
AC Power (included) 120 VAC / 12 VDC power pack with 2.5 mm plug

 


L-400B - LF/VLF Active Antenna

Price: $179.00
Quantity:

The L-400B active antenna is a compact 26 inch fully sealed e-probe designed for receiving within the VLF and LF spectrum. The versatile and proven reliable L-400B may be used with all 50 to 100 ohm input receivers and converters. The L-400B broadband filter design enables you to effectively receive the entire LF spectrum from <10 kHz through 530 kHz without the need for a tuner. The antenna has very high E-field sensitivity with the advantage of excellent BC intermodulation rejection with its sharp roll off filter. The antenna is omni-directional allowing for various installation configurations and for use as a portable antenna. Supplied with fifty feet of RG-174/U cable. AC supply included.

L-400B Specifications
Antenna Probe Size 26 inches long, 1 inch diameter PVC
Coupler Size 4.19"L x 2.74"W x 1.57"H
Filter Rejection >40 dB above 600 kHz
E Field Sensitivity -6 dB typical
Low Pass Filter Response 10 kHz to 500 kHz
IP3 24 dBm
Internal (E probe) Amplifier Gain 20 dB
Output Impedance 50 – 100 ohm
Input/Output Jacks RCA type, BNC optional
Operating Temperature -20°F to +130°F
Weatherproofing Antenna probe tested to 2 atmospheres (-66 ft)
DC Power 12 – 18 Volt, 20 mA, NEDA 1604 (2)
AC Power (included) 120 VAC / 12 VDC power pack with 2.5 mm plug

 


L-950 - LF Active Loop Antenna

Price: $390.00
Quantity:

The LF active broadband coaxial wound loop is used in conjunction with an LF receiver input circuit. The design consists of a balanced peaked lowpass coaxial design providing exceptional sensitivity and directivity.

Frequency response is 10 kHz to 500 kHz (broadband). The 24 inch square PVC loop may be broken down into components for storage. The loop antenna and receiver may be hand held or mast mounted.

L-950 Specifications
Frequency Response 10 kHz to 500 kHz +/-3 dB (normalized loop response)
Sensitivity 500 kHz: 500 mV/ V/m
200 kHz: 200 mV/ V/m
10 kHz: 10 mV/ V/m
Loop Amplifier Gain 30 dB
IP3 30 dBm
Loop Nulls >30 dB
Connectors BNC
Size / Weight 24" square / 12" handle, 1.5 lb, PVC frame
DC Power 12 – 15 VDC @ 40 mA
AC Power (included) 120 VAC / 12 VDC power pack with 2.5 mm plug

 


Broadcast Antennas

M-601C - AM Active Antenna

Price: $179.00
Quantity:

The M-601C is commercially rugged and suitable for outdoor installations. Proven reliable, and used in installations around the world for more that ten years, the M-601 is considered a standard among professionals as an excellent source antenna for distributed communications and home entertainment systems. Operating between 530 and 1750 kHz, the high impedance E-field antenna contains a high gain signal amplifier and high pass filter for reduction of lower frequency interference caused by dimmers and power lines. The antenna is easily pipe or mast mounted. Supplied with fifty feet of RG-174/U cable. AC supply included.

M-601C Specifications
Antenna Probe Size 26 inches long, 1 inch diameter PVC
Coupler Size 4.19"L x 2.74"W x 1.57"H
Operating Frequency 530 kHz to 1700 kHz +/-3 dB
E Field Sensitivity -12 dB
IP3 28 dBm
Output Impedance 50 – 100 ohm
Input/Output Jacks RCA type, BNC optional
Operating Temperature -20°F to +130°F
Weatherproofing Antenna probe tested to 2 atmospheres (-66 ft)
DC Power 12 – 18 Volt, 20 mA, NEDA 1604 (2)
AC Power (included) 120 VAC / 12 VDC power pack with 2.5 mm plug

 


M-607 - AM BC Active Loop Antenna

Price: $390.00
Quantity:

The AM BC active broadband coaxial wound loop is used in conjunction with an AM broadcast Receiver. The design consists of a balanced peaked lowpass coaxial design providing exceptional sensitivity and directivity.

Frequency response is 530 kHz to 1720 kHz (broadband). The 24 inch square PVC loop may be broken down into components for storage. The loop antenna and receiver may be hand held or mast mounted.

M-607 Specifications
Frequency Response 530 kHz to 1720 kHz +/-3 dB (normalized loop response)
Sensitivity 600 m/V V/m @ 1 MHz
Loop Amplifier Gain 30 dB
IP3 30 dBm
Loop Nulls >30 dB
Connectors BNC
Size / Weight 24" square / 12" handle, 1.5 lb, PVC frame
DC Power 12 – 15 VDC @ 40 mA
AC Power (included) 120 VAC / 12 VDC power pack with 2.5 mm plug

 


Marine Antennas

MH-920 - LF/MF/HF Marine Antenna

Price: $320.00
Quantity:

Broadband active antenna designed for a wide spectrum of ship-board marine applications including A2/A3/A4 GMDSS, NAVTEX, DGPS, LORAN, AM BC, and general shortwave listening. Supplied with universal mount.

MH-920 Specifications
Antenna Probe Size 26 inches long, 1 inch diameter PVC, 1"-14 thread
Coupler/Signal Amp. Size 4.4"L x 2.3"W x 1.3"H, Aluminum die-cast housing
Operating Frequency 10 kHz to 60 MHz
E Field Sensitivity -21 dB (probe)
Signal Amplifier Gain 10 dB
Max. Linear Power Output 17 dBm (E-probe)
Third-Order Intercept >35 dBm
Output Impedance 50 – 75 ohm
Input/Output Jacks BNC
Operating Temperature -20°F to +130°F
Weatherproofing Antenna probe tested to 2 atmospheres (-66 ft)
DC Power (MH-920DC) 12 Volts, 80 mA, fused
AC Power (MH-920AC) 120 VAC / 12 VDC power pack with 2.5 mm plug

ML-420 - VLF/LF Marine Antenna

Price: $320.00
Quantity:

Low Frequency active antenna designed for ship-board marine applications including NAVTEX Weather Service, DGPS, NDB Navigational Aids, Time Standards and LORAN. Supplied with universal mount.

ML-420 Specifications
Antenna Probe Size 26 inches long, 1 inch diameter PVC, 1"-14 thread
Coupler/Signal Amp. Size 4.4"L x 2.3"W x 1.3"H, Aluminum die-cast housing
Operating Frequency 10 kHz to 550 kHz
E Field Sensitivity -6 dB
Max. Linear Power Output 15 dBm (E-probe)
Third-Order Intercept >35 dBm
Output Impedance 50 – 75 ohm
Input/Output Jacks BNC
Operating Temperature -20°F to +130°F
Weatherproofing Antenna probe tested to 2 atmospheres (-66 ft)
DC Power (ML-420DC) 12 Volts, 30 to 40 mA, fused
AC Power (ML-420AC) 120 VAC / 12 VDC power pack with 2.5 mm plug

HF Antennas

H-800 - SkyMatch

Price: $169.00
Quantity:

The H-800 SkyMatch is a compact broadband active antenna that effectively covers the longwave, mediumwave and shortwave bands (10 KHz through 50 MHz.) The antenna's active components are housed in a 26 inch fully sealed probe and powered through a coaxial feed from the remote coupler interface at the receiver end.The H-800 is an alternative antenna to a long wire system where space is limited. Great for portable operation using internal batteries. Supplied with fifty feet of RG-174/U cable. AC supply included for fixed operation.

H-800 Specifications
Antenna Probe Size 26 inches long, 1 inch dia. PVC
Coupler Size 4.19"L x 2.74"W x 1.57"H
Operating Frequency 10 kHz to 50 MHz +/- 3 dB
E Field Sensitivity -24 dB
IP3 23 dBm
Output Impedance 50 - 100 ohms
Operating Temperature -25°F to +120°F
Weatherproofing Antenna probe tested to 2 atmospheres (-66 ft)
DC Power 12 - 18 Volt, 10 ma, NEDA (2) or equivalent battery
AC Power: (included) 120 VAC / 12 VAC power pack with 2.5 mm plug

 


Components

L-111-PCB - PCB LF Converter

Price: $119.00
Quantity:

L-111 / PCB circuit board is from the L-111 VLF/LF converter. For use with long wire antennas or with the L-400B active antenna. Receiver tuning is between 4.0 and 4.5 MHz. Assembled and tested. This unit is ready for custom assembly into your receiver or instrument box. Instruction Sheet provided.

L-111/PCB Specifications
Converter Board Size 3.1"L x 1.75"W
IF Output Frequency 4 to 4.5 MHz
Frequency Response <10 kHz to 530 kHz +/-5 dB
IF Rejection 80 dB typical
Input Impedance 50 ohm (three element low pass input)
Output Impedance 50 – 100 ohm
Input/Output Jacks RCA Type
Operating Temperature -20°F to +130°F
Regulated DC Power 12 – 18 Volt, 20 mA, NEDA 1604 (2)
AC Power (included) 120 VAC / 12 VDC power pack with 2.5 mm plug

 


N-300 - Ground Isolator

Price: $28.00
Quantity:

The N-300 Ground Isolator is designed for isolating ground loops and noise. The N-300 is used between the antenna coax line and the receiver, (not for transmitting). Band width is 10 kHz to 4 MHz. The N-300 consists of a bifilar wound torroid with a 50 ohm impedance. A neon discharge tube is used for ESD protection.

N-300 Specifications
Bandwidth 10 kHz to 30 MHz +/- 3 dB
Input/Output Impedance 50 ohm
Winding Capacitance 30 pF typical
Isolation Resistance >20 megohm
Connectors RCA type, BNC optional

 


SPL-2/50 - VLF-HF Two-Way Splitter

Price: $45.00
Quantity:

Provides an impedance matched 50 ohm coaxial connection for two receivers when feeding signal from one active antenna, or when combining two different antennas (L-400B and H-800), or combining an active antenna and a wire antenna into one receiver.

SPL-2/50L Specifications
SPL-2 Size 2.87"L x 2.38"W x 1.00"H
Bandwidth <10 kHz to 30 MHz
Input Impedance 50 ohm
Output Impedance 50 ohm
Insertion Loss <1 dB above 6 dB splitter loss
Port Isolation >40 dB typical
Shorted Port Loss <1 dB
Input/Output Connectors RCA type, BNC optional

SPL-2/75 - BC Two-Way Splitter

Price: $45.00
Quantity:

Provides an impedance matched 75 ohm coaxial connection for two AM BC receivers when feeding signal from one M-601 antenna, or when combining two antennas for one receiver or distribution amplifier.

SPL-2/75 Specifications
SPL-2 Size 2.87"L x 2.38"W x 1.00"H
Bandwidth <10 kHz to 30 MHz
Input Impedance 75 ohm
Output Impedance 75 ohm
Insertion Loss <1 dB above 6 dB splitter loss
Port Isolation >40 dB typical
Shorted Port Loss <1 dB
Input/Output Connectors RCA type, BNC optional

 


L-202-PCB - PCB LF Preamplifier

Price: $90.00
Quantity:

Printed circuit board completely wired and tested with same specifications as L-202B. Ready for custom assembly into your receiver or instrument box.

L-202/PCB Specifications
PC Board Size 3-1/16"L x 1-11/16"W
Filter Rejection >40 dB in AM BC passband and higher
Gain 20 dB maximum (adjustable)
Pass Band 10 to 520 kHz +/- 4 dB
Max. (linear) Output Power 8 dBm
Output Impedance 50 – 75 ohm
Input/Output Jacks RCA Type
DC Power 12 – 15 VDC, 30 – 40 mA
AC Power (included) 120 VAC / 12 VDC power pack with 2.5 mm plug

 


AC-600 - Inductive Coupler

Price: $42.00
Quantity:

Provides a wireless connection between the M-601C active antenna and a portable receiver's internal loop stick antenna. The typical frequency response is from 200kHz to 4 MHz.


L-202B - LF/VLF Preamplifier

Price: $119.00
Quantity:

Fixed tuned LF/VLF preamplifier designed to improve your receiver or converter's VLF and LF   reception for mainly use with a long wire antenna. The low noise amplifier boosts gain throughout the entire LF spectrum eliminates bc intermod and provides flat coverage between 10 kHz and 520 kHz.

L-202 Specifications
Size 4.19"L x2.74"W x 1.57"H
Filter Rejection >40 dB in AM BC passband and higher
Gain 20 dB maximum (adjustable)
Pass Band 10 to 520 kHz +/- 4 dB
Max. (linear) Output Power 8 dBm
Output Impedance 50 – 75 ohm
Input/Output Jacks RCA Type
DC Power 12 – 15 VDC, 30 – 40 mA
AC Power (included) 120 VAC / 12 VDC power pack with 2.5 mm plug

 


Options

BNC-F - BNC Antenna Option

Price: $20.00
Quantity:

Active Antennas and Couplers with BNC F Connectors are available as an option for Models: H-800, M-601C, L-400B and L-111. The cable to the antenna is user supplied, which can be most any type of 50 or 75 ohm coaxial cable with BNC M connectors. Cable runs between the antenna and receiver can be made up to 200 feet using 1/4 inch cable, or 600 feet using 1/2 inch cable. Add $20.00 for active antennas with BNC option.


Misc Electronics

3MS-1x2 - 3M Scotch-Seal Tape 1 in x 2 ft

Price: $4.00
Quantity:

3M™ Scotch-Seal™ 2229 Mastic Tape, is a durable mastic tape product, designed as the best weatherproofing sealant for electrical connections, splices and feed-throughs. Easily wrapped and stretched around irregular surfaces, or molded as a plug to form a solid water-tight block. Self-healing and UV resistant with a high dielectric rating. Available in rolls of 1 inch x 10 feet, $18.00 each, or in economy lengths of 1 inch x 2 feet at $4.00 each. Add $2.00 postage per order (free shipping with any antenna order).

3M™ Scotch-Seal™ is a Trademark of 3M Corp. U.S.A.


UHF-BNC - UHF Male / BNC Female Adapter

Price: $4.00
Quantity:

For input/output connector interface change. Adapters may be combined with other mating adapters. Postage $2.00 (free shipping with any antenna order).


RCA-UHF - RCA Male / UHF Female Adapter

Price: $4.00
Quantity:

For input/output connector interface change. Adapters may be combined with other mating adapters. Postage $2.00 (free shipping with any antenna order).


RCA-BNC - RCA Male / BNC Female Adapter

Price: $4.00
Quantity:

For input/output connector interface change. Adapters may be combined with other mating adapters. Postage $2.00 (free shipping with any antenna order).


JA - Jumper Assembly

Price: $9.00
Quantity:

BNC Male / RCA Male Jumper. RG/58/U, 4 ft. Postage $2.00 (free shipping with any antenna order).


BNC-RCA - BNC Male / RCA Female Adapter

Price: $4.00
Quantity:

For input/output connector interface change. Adapters may be combined with other mating adapters. Postage $2.00 (free shipping with any antenna order).


3MS-1x10 - 3M Scotch-Seal Tape 1 in x 10 ft

Price: $18.00
Quantity:

3M™ Scotch-Seal™ 2229 Mastic Tape, is a durable mastic tape product, designed as the best weatherproofing sealant for electrical connections, splices and feed-throughs. Easily wrapped and stretched around irregular surfaces, or molded as a plug to form a solid water-tight block. Self-healing and UV resistant with a high dielectric rating. Available in rolls of 1 inch x 10 feet, $18.00 each, or in economy lengths of 1 inch x 2 feet at $4.00 each. Add $2.00 postage per order (free shipping with any antenna order).

3M™ Scotch-Seal™ is a Trademark of 3M Corp. U.S.A.