Fig. 3. The isolation of the other contact (around 40 dB worst case from 2.4 - 3.25 GHZ

You can order the relay only at EU 9.90 each here:

And an empty PCB with  the relay at EUR 15.96 each here: 

​Fig. 1


  I am sorry I didn't know of the AXICOM HF353 relay before. It is designed with a 50-Ohm contact and works very nicely up to 3 GHZ and more! It can handle 40-50 W of RF power at 3 GHZ! It's insertion loss is very low at 0.25 dB max while the isolation of the non-selected port is >40 dB.

I quickly prepared a small PCB with 2-oz copper thickness and 50 Ohm transmission lines and when built I could happily verify its performance.  And because I thought many experimenters will find this usefull I made it available to order.

The relay's coil is specified for 5 VDC operation but the PCB module is designed for powering the relay with a MOSFET switch and is eqiopped with resistors for 13.8 VDC system voltage. This can be changed by altering the values of the resistors R1 and R2. Extensive filtering is used and balanced snubbing to reduce voltage transients to any system this module will connect with. The MOSFET gate will accept a 3.3V or 5V TTL High signal to activate the relay. A geen LED will light and altogether will consume around 35 mA.

Fig. 2. The insertion loss of the selected relay contact from 1 MHZ to 4 GHZ.

ORDERING:  EUR 20.00 + s&h

​The prices do not include 24% Greek VAT applicable only to individual buyers from European Union. 

The Module includes a  high-quality built & tested ENIG FR4 PCB (27.5 x 39 mm) that comes with 3 female SMA conenctors soldered in place.

The shipping is with registered mail  (your signature is required upon delivery). 

The shipping cost is USD 3.99 for total value under USD 9.99, USD 7.99 for total value under 49.99, USD 11.99 for total items value under 99.99, USD 15.99 for total value under 199.99 and free for total value grater than USD 200.00. 

The shipping is with registered mail with tracking info and delivers to USA, Australia in about a week to 12 days max, or less than a week for Europe. 

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RF High-Power Relay

  •  50 Ohm contact

  • 0.25 dB max attenuation at 3 GHZ

  • 40 dB min isolation

  • More than 40W CW power handling