RadioPrep

Texas, United States

782
 Sales

5.0 (169)

3 years
on Etsy

5.0 (169)

782
 sales

3 years
on Etsy

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782
 Sales

5.0 (169)

3 years
on Etsy

5.0 (169)

782
 sales

3 years
on Etsy

All 11
Shirts 3
Gear 2
Antenna 6

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782 Sales

172 Admirers

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Last updated on Aug 22, 2025

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Radio Prep

Reviews

5.0 (169)

Average item review

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

M. on May 12, 2026

5 out of 5 stars

A+ on all areas, great seller!

EFHW 49:1 Transformer QRP Antenna | End Fed Half Wave for 80m–10m | W5CWT Portable HF Field Antenna | Wire Not Included

EFHW 49:1 Transformer QRP Antenna | End Fed Half Wave for 80m–10m | W5CWT Portable HF Field Antenna | Wire Not Included
Ken on May 10, 2026

5 out of 5 stars

Fast shipping and great communication. Thank you!

Limited Solar-Flare Edition! - W5CWT QRP Field Antenna – End-Fed Half-Wave Transformer (Wire Not Included)

Limited Solar-Flare Edition! - W5CWT QRP Field Antenna – End-Fed Half-Wave Transformer (Wire Not Included)
Sean on May 2, 2026

5 out of 5 stars

Item well crafted and as described

Radio responded on May 3, 2026

Thanks Sean! Enjoy! -73 Dave

W5CWT QRP Field Antenna – End-Fed Half-Wave Lever Transformer (Wire Not Included)

W5CWT QRP Field Antenna – End-Fed Half-Wave Lever Transformer (Wire Not Included)
Jeffrey on May 1, 2026

5 out of 5 stars

Tuned right up and nice and compact for SOTA and POTA activations

End-Fed Half-Wave (EFHW) QRP Transformer Low Band (Wire Needed/Not Included)

End-Fed Half-Wave (EFHW) QRP Transformer Low Band (Wire Needed/Not Included)
Paul on Apr 25, 2026

5 out of 5 stars

easy to deploy and wind

Radio responded on Apr 25, 2026

Thanks Paul! -73 Dave

W5CWT EFHW Antenna Wire (67ft): 40m-10m, Silicone Jacket, with Winder

W5CWT EFHW Antenna Wire (67ft): 40m-10m, Silicone Jacket, with Winder
Vincent on Apr 22, 2026

5 out of 5 stars

Looks and works as it should. Seller went out of his way to ship me more than he had in stock.

Radio responded on Apr 22, 2026

Thanks Vincent! Enjoy! -73 Dave

NEW VERSION - End-Fed Half-Wave, Lever-Style QRP Transformer for Low Bands (Wire Needed/Not Included)

NEW VERSION - End-Fed Half-Wave, Lever-Style QRP Transformer for Low Bands (Wire Needed/Not Included)
Daniel on Apr 20, 2026

5 out of 5 stars

Great company and fantastic antenna.

Radio responded on Apr 20, 2026

Thanks Daniel! Enjoy! -73 Dave

W5CWT EFHW Antenna Wire (67ft): 40m-10m, Silicone Jacket, with Winder

W5CWT EFHW Antenna Wire (67ft): 40m-10m, Silicone Jacket, with Winder
Etsy buyer on Apr 16, 2026

5 out of 5 stars

As described, great quality, works perfect. Doesn’t take up a lot of room in my pack. Perfect for hiking.

Radio responded on Apr 16, 2026

Thanks!! Enjoy!

W5CWT 80-Watt Field Antenna - EFHW, Lever-Style Transformer for Low Bands (Wire Needed/Not Included)

W5CWT 80-Watt Field Antenna - EFHW, Lever-Style Transformer for Low Bands (Wire Needed/Not Included)
stephen on Apr 10, 2026

5 out of 5 stars

I love these. this is the second one I've ordered. bought the lower powered one for POTA and was impressed so went for this larger one. Great product.

Radio responded on Apr 10, 2026

Thanks Stephen!! I'm so glad you're enjoying them! -73 Dave

80-Watt Version - End-Fed Half-Wave, Lever-Style Transformer for Low Bands (Wire Needed/Not Included)

80-Watt Version - End-Fed Half-Wave, Lever-Style Transformer for Low Bands (Wire Needed/Not Included)
Paul on Apr 25, 2026

5 out of 5 stars

Works fine. All bands as deployed no tuning or trimming

Radio responded on Apr 25, 2026

Thanks Paul! Enjoy! -73 Dave

W5CWT Original QRP Field Antenna - End-Fed Half-Wave Transformer for HF Bands (Wire Needed/Not Included)

W5CWT Original QRP Field Antenna - End-Fed Half-Wave Transformer for HF Bands (Wire Needed/Not Included)

About RadioPrep

Ham Radio antennas, t-shirts and gear

Sales 782

On Etsy since 2023

Ham Radio antennas, t-shirts and gear

My workshop is also my shack! Here's my wife working the November Sweepstakes!
My early prototypes. Now all transformers use our custom PCBs.
Designed for outdoor use!
Running FT8 with my Digital GoBox!

CQ CQ CQ!

I've been a ham radio operator for over 30 years and have enjoyed nearly every aspect of the hobby—especially POTA activations and digital modes. Along the way, I found myself constantly refining my own gear, looking for the best balance of performance and portability. That led me to start building 49:1 transformers for EFHW antennas, focusing on quality, reliability, and compact designs.

What began as a personal project soon grew into something more—helping fellow operators get on the air with well-built, handcrafted gear. Every transformer I sell is carefully made and tested to ensure it meets the demands of real-world use. Whether you’re activating a park, setting up at home, or experimenting with new antenna setups, I hope my products help make your radio experience even better.

Thanks for stopping by, and 73!

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Shop members

Dave

Owner, Maker

I've been a ham for over 30 years and enjoy a wide range of radio activities, especially POTA and digital modes. I build and sell quality 49:1 transformers and accessories to help fellow operators get on the air.

Production partners

Printify

San Francisco, CA

Printify is vital to helping me produce top quality products on-demand for customers. With their ability to stream line production using the highest quality materials, I am able to focus on design, marketing and customer service.
Senge Graphics Inc.

Verona, PA

Graphics printer