[ICOM] IC-756pro RX ANT switching

[Adam Farson]

Hi Julio,

Yes, "a wee bit deef" is Scottish slang for "deaf as a post."

On the IC-7800, the RX-ANT IN sockets are connected to the RX-ANT OUT
sockets via coax jumpers. If there is a fault in the RX-ANT signal path, it
will degrade reception via the main ANT socket as well, as the received
signal flow is from the main ANT socket, via the T/R relay, to RX-ANT OUT,
then via the jumper to RX-ANT IN.

Your active antenna may be defective. Have you checked it on another radio,
or on another antenna socket on the IC-7800?

Cheers for now, 73,
Adam VA7OJ/AB4OJ

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Julio Peralta
Sent: 15 January 2006 06:35
To: 'ICOM Reflector'
Subject: RE: [ICOM] IC-756pro RX ANT switching

Adam when you say deef are we talking completely dead on the receive port? 

The reason I'm asking is I just started using one of the new active receive
antennas from DX Engineering through the receive port on the 7800 and was
taken aback by the reduced signal strength from that antenna. I reason that
if the 7800 has a fuse and it was open I wouldn't hear anything. This is my
first use of a receive antenna and I wasn't expecting such a reduction of
signal strength. 

Julio, W4HY

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
On Behalf Of Adam Farson
Sent: Sunday, January 15, 2006 3:31 AM
To: 'ICOM Reflector'
Subject: RE: [ICOM] IC-756pro RX ANT switching


Hi Dave,

1/R and 2/R switch the receive RF signal path from ANT1 or ANT2 to the
RX-ANT input. If the input is still "a wee bit deef" (like auld Mrs.
McGregor), the RF fuse DS111 (Part No.HRS-4160A) on the RF UNIT board may
have gone open. (IC-756Pro Service Manual, p. 10-8).

You can download the IC-756Pro service manual from Marcucci, mods.dk or
http://www.qsl.net/icom/

Cheers for now, 73,
Adam VA7OJ/AB4OJ


-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
On Behalf Of Dave G4GED
Sent: 15 January 2006 00:20
To: ICOM Reflector
Subject: [ICOM] IC-756pro RX ANT switching

Hi all
Wonder if  someone could tell me how to switch to receive from the RX ANT
port? I've been thro' the manual 2 or 3 times and cannot find a proper
instruction for this. The antenna function switch toggles 1, 2, and if held
down 1/R and 2/R but neither of these activate the RX ANT port?

Many tnx in advanced
 73 Dave



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Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net Icom Users
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----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net Icom Users
Net: Sundays, 1700Z, 14.316 MHz Icom FAQ: http://www.qsl.net/icom/



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