50:200 ohm (4:1) HF Balun or Unun Core Kit, 3-31 MHz, 250 watts

Model BA-4-250 is a 4:1 voltage balun/Unun kit (assembly required from parts supplied) used to translate a 50 ohm input up to 200 ohms at power levels up to 250 watts when used with a matched load. With a matched load the SWR will not exceed 2:1 over the frequency range 1.8 to 30 MHz.The kit consists of a 1.4" diameter ferrite core, two colors of insulated wire. a UHF connector with stainless steel hardware, and an instruction manual with directions to connect the kit as a 4 to 1 balun (balanced coax to balanced antenna like zepp or from 450 ohm feeder line to coax for a tuner) or 4 to 1 unun (unbalanced coax to unbalanced antenna like end fed or random wire).This balun will also transform at 4:1 for a wide variation of load impedances. Shown below are AIM 4170 SWR results for a 200 ohm load. This balun gives near perfect transformation through 30 Mhz with a SWR under 1.25 . Light blue vertical bars are ham bands starting at 160 meters at left to 10 meters at right.

50:200 ohm (4:1) HF Balun or Unun Core Kit, 3-31 MHz, 250 watts

Model BA-4-250 is a 4:1 voltage balun/Unun kit (assembly required from parts supplied) uséd to translate a 50 ohm input up to 200 ohms at power levels up to 250 watts when uséd with a matched load. With a matched load the SWR will not exceed 2:1 over the frequency range 1.8 to 30 MHz.

The kit consists of a 1.4" diameter ferrite core, two colors of insulated wire. a UHF connector with stainless steel hardware, and an instruction manual with directions to connect the kit as a 4 to 1 balun (balanced coax to balanced antenna like zepp or from 450 ohm feeder line to coax for a tuner) or 4 to 1 unun (unbalanced coax to unbalanced antenna like end fed or random wire).

This balun will also transform at 4:1 for a wide variation of load impedances. Shown below are AIM 4170 SWR results for a 200 ohm load. This balun gives near perfect transformation through 30 Mhz with a SWR under 1.25 . Light blue vertical bars are ham bands starting at 160 meters at left to 10 meters at right.

×

Buy now and save!
Tell a friend Visit store Watch now

Postage info

Click the Postage tab above the listing description for more info

Click the Postage tab above the listing description for more info!

Additional delivery notes

PICK UP OPTION

Sorry, our items are NOT available for pick-up.

PAYING VIA PAYPAL


We accept PayPal on our all our items so you can shop with confidence.

Simple choose the PayPal option when proceeding through the checkout.

Additional Information

No additional information at this time

Ask seller a question

To contact our Customer Service Team, simply click the button here and our Customer Service team will be happy to assist.

Ask seller a question

© PALOMAR-ENGINEERS.COM

Click the Postage tab above the listing description for more info

Accepted Payment Methods

  • PayPal

Returns are not accepted

Buyer will pay for return shipping.


Additional Information:
All returns will be exchanged for like product or store credit provided they are returned within 30 days with original packaging and all manufactured products are in original shipped condition with unsealed product labels. All cash refunds subject to 15% restocking fee.