[ICOM] IC-775 RX antenna

[Kelly Taylor]

Icom was known for this loop dating back as far as the 740, I think.

I had one. It facilitated a receive antenna the following way: the signal 
path for an RX signal normally goes in through the main SO239 antenna 
connector, through the T/R relay and out to one of these jacks, through the 
loop into the other jack and then on in to the first RX stage. With the loop 
in place, RX and TX both happen through the SO239.

You could plug in your RX antenna to RX ANT IN, I believe.

I don't recall if there was any overload protection (in case the beverage, 
K9AY, pennant or other RX antenna got a major dose of RF from the TX 
antenna), so a protection circuit such as a Burghardt BEV-1 or other such 
device may be a good idea.

With the 756 and newer models, RX ant in is a separate jack and switching is 
via a menu.

73, kelly
ve4xt

----- Original Message ----- 
From: "Mike K9MI" <k9mi at sbcglobal.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, December 03, 2006 7:48 PM
Subject: Re: [ICOM] IC-775 RX antenna


> Bob, try checking the achieves at contesting.com or eham.net on "topband", 
> or just join the Topband reflector. Lots of good info.
>
> Mike, K9MI
>
>
> ----- Original Message ----- 
> From: "AD5VJ Bob" <rtnmi at sbcglobal.net>
> To: "Icom Reflector" <icom at mailman.qth.net>
> Sent: Sunday, December 03, 2006 20 55
> Subject: [ICOM] IC-775 RX antenna
>
>
>> Hi fellows:
>>
>> I have an IC-775 es am wanting to know if anyone has made a RX antenna 
>> switch for theirs or knows how to do so.
>>
>> The rig has a jumper in the back (#2 on page 11 in the manual) right next 
>> to the transverter socket, which looks like it might
>> accommodate something like this. But it doesn't really say much about it.
>>
>> The manual on page 11 says: "RECEIVE ANTENNA JACKS [RX ANT IN]/[RX ANT 
>> OUT] (p.15)
>> Located between the transmit/receive switching circuit and receiver's RF 
>> stage. Connect an external preamp or RF filter, if
>> desired."
>>
>> So you go to pg 15 and all it shows is the jumper cable connected
>>
>> I am not wanting an external preamp or RF filter, but would like to have 
>> a receive only antenna for 160 especially.
>>
>>  73 fer nw es gud DX,
>> QSL VIA: BUR, LotW, e-QSL
>> Bob AD5VJ(AAR6VM)
>> Old calls: WY5L/KH3-KE5CTY-N5IET
>> http://www.ad5vj.com/
>>
>> Member: CTDXCC, NTCC, STXDXCC
>> FISTS: # 12637, SKCC# 2369
>> 10X# 37210, FP#-1141
>> SMIRK#-5177, RARS #-149
>>
>>
>>
>>
>>
>> ----
>> 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/
>>
>
>
> ----
> 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/