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Antenna Tape Measure 2M–30M
Precision Antenna Building, Simplified
The Antenna Tape Measure 2M–30M is a purpose-built tool engineered specifically for amateur radio operators who design, deploy, and tune antennas in the shack or the field. This is not a generic tape measure—it’s a precision antenna reference that puts critical electrical lengths right at your fingertips, saving time, reducing errors, and eliminating guesswork.
Featuring a 25-foot industrial-grade tape, this rugged tool includes clearly printed, pre-calculated antenna lengths for the most commonly used HF and VHF bands. It is ideal for constructing dipoles, verticals, and loop antennas up to 30 meters, whether you’re operating portable, from an HOA-restricted location, or building a permanent installation.
Integrated Antenna Length Markings
- ¼-Wave markings: 2M, 6M, 10M, 15M, 17M, 20M, 30M
- ½-Wave markings: 2M, 6M, 10M, 15M
- Full-Wave markings: 2M, 6M
- Loop antenna markings: 10M, 15M, 17M, 20M, 30M
All markings are calculated to give you fast, reliable starting lengths for efficient antenna construction and tuning—no charts, apps, or mental math required.
Adjustable Counterpoise Capability
In addition to antenna building, the Antenna Tape Measure can be used as a fully adjustable counterpoise for ¼-wave vertical antennas. Simply extend the tape to the desired length and adjust in real time—perfect for portable operations, field tuning, emergency communications, and experimentation.
¼-Wave Counterpoise Reference Table
(Free-space electrical lengths — trim/tune as needed for real-world conditions)
|
Band |
Start (MHz) |
¼λ Counterpoise |
Mid (MHz) |
¼λ Counterpoise |
End (MHz) |
¼λ Counterpoise |
|---|---|---|---|---|---|---|
|
2M |
144.000 |
1.71 ft / 0.52 m |
146.000 |
1.68 ft / 0.51 m |
148.000 |
1.66 ft / 0.51 m |
|
6M |
50.000 |
4.92 ft / 1.50 m |
52.000 |
4.73 ft / 1.44 m |
54.000 |
4.55 ft / 1.39 m |
|
10M |
28.000 |
8.78 ft / 2.68 m |
28.850 |
8.52 ft / 2.60 m |
29.700 |
8.28 ft / 2.52 m |
|
15M |
21.000 |
11.71 ft / 3.57 m |
21.225 |
11.59 ft / 3.53 m |
21.450 |
11.46 ft / 3.49 m |
|
17M |
18.068 |
13.61 ft / 4.15 m |
18.118 |
13.57 ft / 4.14 m |
18.168 |
13.53 ft / 4.13 m |
|
20M |
14.000 |
17.56 ft / 5.35 m |
14.175 |
17.35 ft / 5.29 m |
14.350 |
17.14 ft / 5.22 m |
|
30M |
10.100 |
24.35 ft / 7.42 m |
10.125 |
24.29 ft / 7.40 m |
10.150 |
24.23 ft / 7.38 m |
Note: Environmental factors, insulation, ground proximity, and antenna geometry will affect final tuning. These values are intended as accurate starting points.
Built for the Real World
- Industrial-grade, ruggedized construction
- No-slip protective housing
- Heavy-duty belt clip for easy carry
Keep it in your radio shack, go-bag, glove box, or field kit. Whether you’re operating POTA, SOTA, EMCOMM, or just experimenting with antennas at home, this is one of those tools you’ll reach for again and again.
The Antenna Tape Measure 2M–30M also makes a practical, thoughtful gift for any serious amateur radio operator who values efficiency, accuracy, and well-built gear.
Triple Guarantee
1. Easy returns
If you are not completely satisfied with your purchase, you may return it within 30 days, subject to a 20% restocking fee. Please note that international orders and items marked as Final Sale are not eligible for returns.
2. Safe with us
Our website is 100% verified and all transaction and customer info is securely encrypted with the latest technology.
3. Have a question?
We have an awesome customer service team who lives and breathes this stuff:
ANTENNA TECH SUPPORT ONLY:
- INQUIRY@CHAMELEONANTENNA.COM
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- ORDERS@CHAMELEONANTENNA.COM
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- 775-742-5165
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