50:112 (2.25:1) CUBE™ Balun 3-30 MHz, 1.5KW/3KW/5KWProduct DetailsCountry/Region of Manufacture: USAType: BALUNInput ohms/Output ohms: 50Frequency Range < 2:1 SWR (MHz): 3-30PEP Power Rating (watts): 1500/3000/5000Enclosure Size: 4" x 4" x 2" (1.5KW), 4" x 4" x 4" (3KW/5KW)Weight (pounds): 3Antenna Compatability: loops, quads, 112 ohm input antennasHigh Power rated at 1.5KW/3KW/5KW (option) PEP (FT8 mode at 1.5KW)
Broad frequency range of 3-30 MHz for < 2:1 SWR into matched load
Compact 4" x 4" x 2" (1.5KW) or 4" x 4" x 4" (3KW/5KW) light weight weatherproof enclosure
Quick, easy deployment with either halyard hoist and side eyebolts or to stud outputs (all 1/4" stainless hardware)
Choice of BALUN (balanced outputs) or UNUN (unbalanced output and ground)
Model CB-2.25-1500, 3000, 5000 is a 2.25:1 (112:50 ohm) multi-core balun used to translate a 50 ohm input to 112 ohms at RF power levels up to 5000 watts PEP when used with a matched load such as single band delta loop, quad or loop skywire. This assembled balun features a multi-core configuration for increased power handling and flatter frequency response to over 30 MHz. With a matched 112 ohm load the SWR over the frequency range is very consistent from 3-30 MHz and SWR is less than 2:1 over the range allowing easy tuning by most radio internal antenna tuners or an external tuner.
High Power rated at 1.5KW/3KW/5KW (option) PEP (FT8 mode at 1.5KW)
Broad frequency range of 3-30 MHz for < 2:1 SWR into matched load
Compact 4" x 4" x 2" (1.5KW) or 4" x 4" x 4" (3KW/5KW) light weight weatherproof enclosure
Quick, easy deployment with either halyard hoist and side eyebolts or to stud outputs (all 1/4" stainless hardware)
Choice of BALUN (balanced outputs) or UNUN (unbalanced output and ground)
Model CB-2.25-1500, 3000, 5000 is a 2.25:1 (112:50 ohm) multi-core balun used to translate a 50 ohm input to 112 ohms at RF power levels up to 5000 watts PEP when used with a matched load such as single band delta loop, quad or loop skywire. This assembled balun features a multi-core configuration for increased power handling and flatter frequency response to over 30 MHz. With a matched 112 ohm load the SWR over the frequency range is very consistent from 3-30 MHz and SWR is less than 2:1 over the range allowing easy tuning by most radio internal antenna tuners or an external tuner.
Christmas lights or yard lights with switching DC power supplies are often the RFI source and a clamp on ferrite bead on the AC AND the DC side feeding the lights is needed to help suppress the switching power supply RFI noise. Suitable snap on beads are FSB31-1/2 for the 1-250 MHz range.
We have also had reported wireless HDTV boxes, and FOSCAM and AMCREST security camera systems causing RFI to garage door remote openers. Use our Garage Door Opener RFI kit to suppress the interference to the opener (VICTIM) – you need one kit for each opener. Maximize the distance from the camera to the openers may also help. Additionally shield cable to the garage door sensors may be needed depending on severity of the camera RFI.
Obvious Tech Note: make sure your remote batteries have enough energy to activate the GDO or the signal they transmit may not be large enough to over ride the RFI signal, but a fresh battery may be able to overcome the weak RFI source and allow the GDO to operate correctly.