4:1 Baluns/Ununs

FLEX TUNER GENIUS RFI Kit - SO2R/3 Antenna Option

SKU RFI-AT-FLEX-TG
$89.95
Ouput RF Ports
1
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FLEX TUNER GENIUS RFI Kit - SO2R/3 Antenna Option
Product Details
MPN: RFI-AT-FLEX-TG or RFI-AT-FLEX-TG3
RFI Suppression Range (MHz): 1-100 MHz

PURPOSE

These kits are designed to choke common mode currents going into or exiting from your Tuner Genius cables. Filters are supplied for the RF Input (s) RF Outputs, DC power and LAN input. The DC power line choke helps keep common mode current out of the power line which could cause interference to other devices connected to the same power line if not suppressed. The LAN cable choke keeps any RFI off the LAN cable input.

USE

RFI-AT-FLEX-TG Standard kit for tuners with SO2R option and RFI-AT-FLEX-TG3 for tuners with 3 antenna outputs option (1X3).

Note if you use other cables into the tuner such as PTT or otherwise, use FSB31-1/2 snap on ferrites for these lines and wind 2 or more turns thru center if possible. These ferrites sold separately.

KIT INCLUDES

Filter Type

Usage

SO2R Kit

3 Antenna Kit

Snap On (1/2” ID)

DC Power

1

1

Snap On (1/2” ID)

Ethernet/LAN input

1

1

FSB31-1
RF Output
2
3
FSB31-1
RF Input
2
1

Total Filters


6

6

INSTALLATION GUIDELINES

SO2R Kit - Part# RFI-AT-FLEX-TG (2 Inputs, 2 Outputs)

RF Output:Snap On Filter (1” ID) – 3 turns (1/2" cable) or 6 turns (1/4" cable) of coax cable through center for each output - Use 1 for channel A and one for channel B Output

RF Input Snap On (1" ID) - 3 turns (1/2" cable) or 6 turns (1/4" cable) of coax cable through center for each input - Use one for channel A and one for channel B Input

Ethernet Cable:Snap On Filter (1/2” ID) – multiple turns through center

DC Power:Snap On Filter (1/2” ID) – 2 or more turns of DC (+ and -) power cord through center

3 Antenna Kit - Part# RFI-AT-FLEX-TG3 (3 Antennas, 1 input)

RF Output:Snap On Filter (1” ID) – 3 turns (1/2" cable) or 6 turns (1/4" cable) of coax cable through center for each output

RF Input Snap On (1" ID) - 3 turns (1/2" cable) or 6 turns (1/4" cable) of coax cable through center for TX input

Ethernet Cable:Snap On Filter (1/2” ID) – multiple turns through center

DC Power:Snap On Filter (1/2” ID) – 2 or more turns of DC (+ and -) power cord through center

Also make sure you connect a good RF ground to the tuner ground post.


4:1 impedance transformers (Baluns and Unun configurations) are available in kit form or assembled form in a weatherproof  Current Unun and Balun Enclosure which we call CUBE Baluns™ and CUBE Ununs™. All 4:1 impedance transformers use ferrite cores and the kit forms can be configured as a balun with balanced output of 200 ohms or as ununs with one side grounded.

4:1 baluns are designed for 50 ohm unbalanced (coax) input to 200 ohm output (either balanced or with one side grounded).

4:1 Baluns are useful between balanced lines for center fed Zepps, Off-center fed (OCF) dipoles with coax, G5RV antennas, full wave loops, NVIS dipoles that are close to ground and have impedance levels near 200 ohms or high impedance feeds for log periodic beams.

4:1 ununs are useful between coax and vertical antennas, monopole verticals or long wires with load impedances near 200 ohms.