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Chameleon Antenna CHA-LD-3
Portable 40 / 30 / 20m linked dipole offering three resonant HF bands from one lightweight field antenna, with colour-coded links for straightforward band selection.
Change between 40, 30 and 20 metres by opening or closing the colour-coded wire links instead of carrying three separate dipoles.
The CHA LD-3 is designed for operators who want the predictable behaviour of a resonant dipole without carrying a separate antenna for each band.
Its two linked wire legs, compact 1:1 balun, line winders and carry pouch form a complete portable radiator for POTA, SOTA, QRP, travel, preparedness and temporary field stations.
Deploy it as an inverted V from a single centre support or as a horizontal dipole between three supports. Select the required band using the colour-coded links, raise the antenna into its final geometry and verify resonance with an antenna analyser before transmitting.
Three resonant amateur bands from one linked wire antenna.
Open or close the matching wire links on both antenna legs to select the required band.
Suitable for single-centre-support inverted V setups or conventional horizontal dipole installations.
Rated to 50W maximum on SSB and 25W maximum on CW and other modes.
A Typical Inverted V Needs One 20ft Centre Support
Raise the CHA LD-3 balun at the centre and slope the two wire legs down towards safe lower tie points, keeping both sides reasonably symmetrical.
The guide's reference inverted-V installation uses a site approximately 60ft across with the centre around 20ft high.
Approximately 70ft of paracord is used in the guide reference installation. Paracord and support structures are not included.
Official CHA LD-3 Quick Start
See Chameleon Antenna's Quick Start reference for the linked dipole layout, band-link positions, inverted-V deployment and supplied components.
View CHA LD-3 Quick StartChange Bands Without Guessing
Open both wire links so only the inner blue-marked section remains electrically active on each side.
Connect the inner link on each side and leave the outer link open.
Connect both links on both sides so that the full wire length is electrically active.
Lower the antenna before changing bands. Both wire legs must use the same link configuration. Raise the antenna into its final operating geometry and verify resonance with an antenna analyser before transmitting.
Designed to Operate Without an External Tuner
With the correct link state selected and the antenna deployed as described in the guide, an external antenna tuner is normally unnecessary.
The guide specifies a typical SWR of less than 2.2:1 in its defined band setup. Final resonance will depend on installation height, geometry, surroundings and ground conditions, so the completed installation should always be checked with an antenna analyser.
Key Specifications
Included Equipment and What You Supply
- CHA LD-3 1:1 balun
- Two linked dipole wire assemblies
- Two line winders
- Carry pouch
- Suitable centre and end supports
- Paracord or suitable support line
- Compatible 50-ohm feed line
- Antenna analyser for final verification
CHA RG-316
Chameleon's documentation identifies its 25ft CHA RG-316 feed line with integrated feed-point RFI choke as a compatible feed-line option for the LD-3.
Build on Equipment You Already Own
The LD-3 guide documents connecting the linked wire pair to the CHA LEFS 4010 dipole centre assembly. The LEFS documentation controls that complete configuration.
A connector or attachment that physically fits is not proof of an approved antenna configuration. Use only complete configurations documented for the CHA LD-3 and its compatible Chameleon Antenna accessories.
Chameleon Antenna CHA-LD-3
Antenna
Guide Reference Setup
Link Configuration
Lower the antenna before changing bands and ensure both wire legs use identical link settings. Raise the antenna in its final configuration and verify resonance with an antenna analyser before transmitting.
Package Contents
- CHA LD-3 1:1 balun
- Two linked dipole wire assemblies
- Two line winders
- Carry pouch
- Centre and end supports
- Paracord or other support line
- Compatible 50-ohm feed line
- Antenna analyser for final installation verification
Compatible Configurations
- CHA RG-316 25ft feed line with integrated feed-point RFI choke
- LD-3 linked wire pair may be used with the CHA LEFS 4010 dipole centre assembly as documented by Chameleon
- CHA LINK-D15 provides a documented 40 / 20 / 15m wire-set alternative for the LD-3 1:1 balun
Use only complete antenna configurations documented for the CHA LD-3 and its compatible Chameleon Antenna components. Physical connector compatibility alone does not establish an approved antenna configuration.
Shipping:
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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]