Call shape

Refers to the two-dimensional shape of the call when displayed on a time x frequency chart. Generally described as being either constant frequency (CF), frequency modulated (FM) or quasi-constant frequency (qCF) calls.

JOIN OUR MAILING LIST

We will use your information to provide you with updates on General news, Workshops, and Detectors (depending on your preferences ticked below).

You can unsubscribe at any time by clicking the link in the footer of our emails. 

We use Moosend as our marketing platform. By clicking below to subscribe, you acknowledge that your information will be transferred to Moosend for processing. Learn more about Moosend's privacy practices here.