FT240-52, ID=1.4", RFI Range 200-1000 MHz
Product Details
RFI Range (MHz): 200-1000 Mhz
ID-B (in/mm): 1.4/35.6
OD-A (in/mm): 2.4/61
Height-C (in/mm): .5/12.7
Weight (oz/gm): 106 grams
Initial permeability: 250
A(L): 325
Inductor Range (MHz): < 30
Transformer Range (MHz): 1-60
Case/Box lot size: 100
for transmission line transformers, RFI suppression - Jerry Sevick book most used mix
Also make sure you connect a good RF ground to the transceiver ground post.
Note to Flex Radio users: Use snap on ferrites for firewire cable, speaker cable and mic cable, Ring ferrites for Antenna output and DC power.
For additional RFI suppression, use a feed line choke at the antenna to suppress common current on the coax feed line – see our store for feed line choke alternatives for use at the antenna.
If you use a linear amplifier we have RFI kits for linear amplifiers that help suppress RFI in your shack or in your neighbor’s house.