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HB9ABX > TECH 27.08.06 19:38l 33 Lines 993 Bytes #999 (0) @ WW
BID : J4O3HNHB9EAS
Read: GUEST DL1LCA DL1RX OE7FMI
Subj: Duplexer-Diplexer: difference
Path: DB0FHN<DB0FOR<DB0SIF<HB9EAS
Sent: 060827/1735z @:HB9EAS.CHE.EU [Basel JN37TM] DP6.00 $:J4O3HNHB9EAS
From: HB9ABX @ HB9EAS.CHE.EU (Felix)
To: TECH @ WW
Duplexer-Diplexer: difference
The names Duplexer and Diplexer are very similar
and frequently confused.
Both are devices that allow simultaneous operation
on two different frequencies.
A Duplexer (Diplexer) is a device that combines
two separate inputs channels to one output channel,
or separates a broad input channel into two separate
output channels.
The Duplexer separates 2 frequencies within the same band
while the Diplexer separates 2 different bands.
The Duplexer requires much more selective circuits
while the Diplexer normally requires only low pass
and high pass circuits.
A Duplexer is used to separate e.g. the repeater input
from the output frequency, while the Diplexer e.g. is
used to separate 2m band from 70cm band.
You can find construcion guides for diplexers for
VHF - UHF - HF here:
home.tiscali.ch/hb9abx
then:
- HAM RADIO
- Homemade Projects
Good success
Felix Meyer HB9ABX
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