RadioBanter - View Single Post - Newb Question

Telamon · September 23rd 06, 12:17 AM posted to rec.radio.shortwave

In article . com,
wrote:

* Use a Balun with a Dipole Antenna
Another 'improved' Shortwave Listening (SWL) Antenna
design would use a Balun {Matching Transformer} between
the Dipole Antennaand the Coax Cable feed-in-line. This
is most often a 4:1 {Four-to-One} Matching Transformer.
Using the Balun will better 'match' the Dipole Antenna to
the Coax Cable feed-in-line and the Receiver across a
wide frequency range then simply using a Dipole Antenna
that is directly connected to the Coax Cable.
- - - The direct conneted Dipole Antenna is great for Hams
working on a single Shortwave (HF) Frequency Band.
+ + + The Dipole Antenna using a 4:1 Balun is better for
Shortwave Listeners (SWLs) who are Listening to a
variety of Frequencies across the Shortwave Band.

Please correct me if I am wrong...

I thought the simple dipole had a 75 ohm feed where a folded dipole had
a 300 ohm feed and would need a 4:1 balun.

Yes.

What would the Balun do with the dipole I rigged up?

A fractional two core. You might find a ham unit that has this transform.

--
Telamon
Ventura, California