[Boatanchors] FS: Receiver multicoupler reduced.

Philip Atchley [email protected]
Wed, 5 Nov 2003 20:21:20 -0000


After too long an hiatus (3-4 years) I'm trying to get back up on HF again.

Because of the amount of transmitting gear that is being installed (vintage
1958 AM/CW transmitter & receiver as well as (hopefully) a more "modern"
SSB/CW transceiver) I need to go back to "normal" coax switches for my
antenna and rig selections (can't transmit through active couplers, pre-amps
etc).

Homebrewed Receiver Multicoupler:
This is a 1 input 4 output active receiver multicoupler (same as the circuit
I posted here).  This will allow 4 receivers to be fed simultaneously from
the same antenna and tuned to the same or widely different frequencies.

Some features.
1.  Input Jack is a BNC connector.  Antenna (or output from preamp) connects
here.
2.  Has 4 output Jacks, 2 BNC and 2 SO-239 (PL-259) connectors for
versatility.
3.  DC input Jack.  13.6VDC at about 600MA.
4.  Usable range.  Works well from 60KHz through 30 MHz, may be usable
outside these limits, just haven't checked.
5.  Contains a 550-1600KHz BCB notch filter to eliminate IMD from nearby
strong broadcast stations.
6.  Input/Output impedance.  Low impedance of approximately 50 Ohms.
7.  Active devices are RF Power transistors that are rated conservatively
and heatsinked.  One driver and separate output transistors for each of the
4 output channels.
8.  Gain:  ~Unity.

PRICE:  Asking 65.00 which INCLUDES shipping in the USA.  The parts
including the nice metal cabinet cost nearly that much.



73 from the "Beaconeers Lair".
Phil, KO6BB

In daily combat with QRM & QRN.
We may lose a battle but we'll win the war!
[email protected]
Merced, Central California
37.18N  120.29W  CM97sh



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