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Chameleon CHA COAX With Integrated RFI Choke
SKU Part Number:
CHA-COAX-RFI
The Chameleon CHA Coax with Integrated RFI Choke is a practical and reliable feedline solution for amateur radio operators who want a quality...
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£59.99
Availability: In stock

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The Chameleon CHA Coax with Integrated RFI Choke is a practical and reliable feedline solution for amateur radio operators who want a quality coax assembly with added common mode noise suppression built in. Available in multiple length options, this configurable coax is ideal for portable, fixed, and temporary station setups where clean signal performance and straightforward installation are important.
Constructed from 50 Ohm RG-58C/U coax with a stranded centre conductor, each cable is fitted with two PL-259 connectors and features an integrated RFI choke installed at one end of the cable. This helps reduce unwanted RF travelling on the outside of the coax, which can assist with lowering interference and improving overall station performance.
With a power limit of 300W SSB, the CHA Coax with Integrated RFI Choke is well suited to a wide range of HF and general amateur radio applications. With several length options available, it is easy to choose the version that best suits your station layout and operating requirements.
Available Options
- 12ft (3.66m) Coax with Integrated RFI Choke
- 50ft (15.24m) Coax with Integrated RFI Choke
- 75ft (22.86m) Coax with Integrated RFI Choke
- 100ft (30.48m) Coax with Integrated RFI Choke
Key Features
- Configurable coax assembly with multiple length options
- Integrated RFI choke fitted at one end of the cable
- 50 Ohm RG-58C/U coax
- Stranded centre conductor
- Fitted with 2 x PL-259 connectors
- Power limit of 300W SSB
- Suitable for amateur radio and portable station use
- Helps reduce common mode RF on the feedline
- Simple and convenient ready to use solution
Specifications
General
- Cable type: RG-58C/U
- Impedance: 50 Ohm
- Centre conductor: Stranded
- Connectors: 2 x PL-259
- Power limit: 300W SSB
- Choke: 1 x integrated RFI choke installed at one end
Attenuation and Average Power
| Frequency MHz | Nominal dB per 100ft | Average Power kW |
|---|---|---|
| 30 | 2.5 | 0.55 |
| 50 | 3.2 | 0.42 |
| 150 | 5.5 | 0.24 |
| 220 | 6.9 | 0.20 |
| 450 | 10.0 | 0.13 |
| 900 | 14.5 | 0.09 |
| 1500 | 19.1 | 0.07 |
| 1800 | 21.1 | 0.06 |
| 2000 | 22.4 | 0.06 |
| 2500 | 25.4 | 0.05 |
| 5800 | 41.1 | 0.03 |
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]
