Deltaloop 20 m + balun 1:4

Product detailed description

Deltaloop with a beam length of 20 m and a balun of 1:4.

New balun design 2025

- more massive boxes, thicker walls
- Brass bushings for lid screws
- Uniform box design for all models
- new power limits
- wider choice of mechanical designs
- choice of pressure valve design
- choice of Amphenol N connector
- MINI version also available in a clamp mount version
- overall precision design

Lightweight version suitable for fixed mounting, laminated telescopes, portable.
Suitable for use with 100 W transceiver.

Mounting for hanging behind the balun.

Ideal mounting is vertically with the power supply in the lower corner (equilateral triangle built on the corner).

Mounting can also be done differently according to space possibilities. Horizontally, diagonally, vertically. It will affect the radiation diagrams.

Technical data:
- Band (7)-14-21-28 MHz
- The 7 MHz band requires a larger antenna tuner range and exhibits higher non-adaptation losses
- deltaloop circumference 20 m, ideal length of triangle arms 1/3+1/3+1/3 (equilateral triangle)
- antenna wire according to the chosen variant
- balun 1:4
- power load 300 W max (SSB 300 W / CW 150 W / digi 70 W)
- weight according to selected antenna cable
- attachment for hanging
- the box is IP-65 rated
- box size 75x75x45 mm
- PL connector (UHF), on request it can be fitted with Amphenol N connector

The balun box can be supplemented with a pressure valve at an additional cost.
Function of the pressure valve - if the instrument box is exposed to temperature changes - e.g. the difference between day and night temperatures or if heat is generated in the box during operation and the box cools down after operation - pressure changes and condensation of water vapour occur in the sealed box.
In some cases, a vacuum may even be created, which can cause dust and moisture to enter.
Installing a valve with a pressure balancing function is a very simple way to provide ventilation and at the same time prevent vapour condensation and dust from entering the enclosure.
If you are interested in installing a pressure equalizing valve, add the valve offered above in the related products to your cart. The extra charge is the price of the valve.

Attach the coaxial cable to the balun so that it does not hang by its own weight on the connector.

Example of hanging the Deltaloop antenna in a horizontal position (e.g. from a window, coax is routed in the direction of the anchor rope).