Portable Operation RFI Kits

Inverted L End Fed Antenna System with Coax Interface including 1:1 feed line choke - 160/80M and 1.5KW/5KW PEP options

SKU PAL-INVL80-1500
$149.95
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$199.99 Save 25%
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Inverted L End Fed Antenna System with Coax Interface including 1:1 feed line choke - 160/80M and 1.5KW/5KW PEP options
Product Details
MPN: PAL-INVL80-1500/5000 or PAL-INVL160-1500/5000
Country/Region of Manufacture: USA
Input Connector: SO-239
Output Connector(s): Eyebolts/Wing Nut
Hardware Type: Stainless Steel
Enclosure Size: 4"x4"x 2"(1.5KW), 6"x 6" x 4"(5KW)

Inverted L antenna with radiator and counterpoise for simple installation - choose 80/160 meters and 1.5KW/5KW feed line choke included inside weatherproof enclosure. Separate counterpoise and ground connections

* Complete package - just add coax

* works single band with ease

* can be configured as vertical or inverted L configuration

* Choice of 1.5K, or 5KW PEP rated choke to suit power needs

After many requests we have created a compact, special interface box with internal feed line choke and separate connections for counterpoises (not grounded) and ground connection. The 1:1 choke keeps RF current off the outside of the coax braid and on the antenna where it belongs. The extra choking action also means that the coax feed line will not act as a radiator causing unnecessary RF interference (RFI).

80 M radiator/counterpoise is 70 Feet (you get 1 each) - adjust length to your favorite frequency

160 M radiator/counterpoise is 130 Feet (you get 1 each) - adjust length to your favorite frequency

Antenna is tuned to you favorite frequency by shortening the counterpoise (roll it up or cur length) while keeping the radiator length constant.

Choose 1,5KW PEP or 5KW PEP options.

1.5KW and 5KW are in 4" x 4" x 2" enclosure. 1.5KW is 3 pounds, 5KW is 5 pounds. 2 antenna insulators are included.

ADD CMNF-1500 (1.5KW) or CMNF-5000 (5KW) common mode noise filter at radio end of coax to reduce common mode noise up to 6 "S" units on long coax runs!

Portable operation is fun but also brings challenges to the radio operator concerning receiver “noise” levels, RF interference from adjacent sources including close by transmitting stations, and RFI from portable generators.  A typical scenario and some suggested Palomar product solutions are shown in the picture below:

Generator RFI testimonial:

Bob 

Received your order in a timely fashion. Tried the generator kit on Sunday & it drops the noise from S9 to S5 and 
took out all the electrical noise.  I may want some more toroids from you at some point for other interference problems
I have  here.
Ken VE3KCY

Using an amplifier?  Don’t forget our Linear Amplifier RFI Kits

Want to make up your own RFI kits for a particular operation? Here are links to some of  typical RFI solutions used in portable operations:

AC/DC common mode filters

Feed Line chokes

Coax Noise Filters

If you use a computer for logging in your portable operations, RFI getting into computers will often lock up your computer and/or radio and a computer RFI suppression kits may be helpful

Computer RFI Kits

Make your expedition or portable operation a pleasant and fun outing and remember to take along your RFI kits so you have more time to operate rather then to troubleshoot intermittent or noisy receiver conditions.

Portable Antenna Kits

If you need an effective portable antenna which folds up for transport yet is easy to deploy at your operating site, consider the BULLET series of end fed wire antennas.

BULLET Antennas (click on link or picture for more info)

Bullet Antenna Product 300x292 - Portable Operation RFI Kits