Tube Feed Line Chokes

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.


TUBE feed line chokes/Line Isolators are used to suppress common mode current carried on the outside of the  coax braid which is often responsible for receiver noise and RFI in the receiver/transmitter. These chokes are very useful for suppressing RFI common mode current at the antenna feed point, at 1/4 wavelength intervals along the coax feed line and also at the entrance to the radio station.  They are available with various input and output connectors so as to conveniently connect to standard output connectors already installed on your feed line.

Palomar Engineers TUBE feed line chokes are designed to have 2-5 times more choking impedance over a broader frequency range than competitor units in similar packaging.  Each choke has the choking impedance and effective frequency range on the product label so you can choose the product best suited for your application.