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directorial antenna

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oldmech

New Member
i am looking to build a directorial antenna for a tracking dog collar, the freq, is 217.099.
 

herbymcduff

New Member
What is the frequency in 217 hz, 217khz, or 217Mhz? Why wouldn't just a normal antenna work.
 

Sebi

Active Member
I think the freq. 217MHz.If yes, You can build a 3-4 element Yagi antenne for direction search.
 

Pilot

New Member
Do you want a simple or complex system?

For a simple - but effective - handheld system see...........

http://www.ussc.com/~uarc/rptr/ark_df_desc.html

The design shown is for 144MHz and would need to be scaled - read the text for directions.

We have used a similar system in parallel with our commercial equpment and have been impressed with the results.

If you want complex then have a look at........

**broken link removed**

for a doppler design.

Do a google search for 'df antenna' for even more.

:lol:
 
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