Sparrevohn Engineering Home Page What's New Sparrevohn Engineering produces 2 products. The foneAlone and the foneFilter. These are both telephone related products and they can both be used with your computer. foneAlone foneFilter ...

Sparrevohn Engineering Order Center Print the Following Form to Place an Order Quantity Description Price Extended _______ Single line filter F-1 14.95 _______ _______ Two line filter F-2 19.95 _______ _______ FoneAlone FA1 16.95 _______ Shipping & Handling 2.50 California Residents add 8.25% Ta...

foneFilter Eliminate Telephone RF Interference Have you ever been talking on the phone only to have another unwanted voice come in over the line, interfering with your call and making it nearly impossible to carry on your conversation. This type of interference is caused from a number of sources, in...

foneAlone The foneAlone is a device that will automatically disconnect your answering machine, FAX, or computer modem from the phone line any time that another phone on the same line is taken off hook. It can also be used as an automatic exclusion device. If there are several extension phones on the...