Introduction
The Elecraft AT1 is a versatile and accurate HF/VHF step attenuator that permits selecting any level of attenuation between 0 and 41 dB in 1 dB steps.
Overview
OVERVIEW
The AT1 features an unusually high upper power limit of 2 watts, making it ideal for many applications where attenuators with a lower power rating cannot be used such as at the output of a QRP transmitter for QRPp experimentation. The AT1 step attenuator is designed to be used as a standalone unit. Optionally, it may be built into existing equipment or an enclosure of your choice.
Note: This product is a kit which may involve building the product by selecting individual components, soldering them to the circuit board, winding toroids, installing LEDs and displays, calibrating circuits to meet specified performance levels.
Specs
SPECS
- Range: 0 to 41 dB in 1 dB steps
- Power Handling: 2 W (continuous)
- Accuracy: Below 50 MHz: ± 0.25+0.01(A) dB 54 to 220 MHz: ± 0.50+0.01(A) dB (Where A is the attenuation in dB.)
- Dimensions: 5-3/8” x 2-11/16” (13.7 cm x 6.8 cm)
- No power source required
Accessories
ACCESSORIES
- Go to to see Accessories such as covers, cases, etc. for this product.
FAQ
FAQ
Q: Does Elecraft sell a factory built version of the AT1?
A: No but we do have builders for hire. Visit for our Builders Resources page for a list of Builders for Hire.
Q: How easy is the AT1 to build?
A: All of our Mini-Modules kits are straightforward, one night projects. The kits are easy to assemble, featuring our "no-wires" construction. They are also a great way to get back into the swing of building and to improve your building skills. All of our Mini-modules have no user installed surface-mount technology, so they are an ideal project for first-time builders.
Manuals
MANUALS
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.
