[Icom] IC-756PROII

Tue, 13 May 2003 21:09:27 -0500

I had the same problem. Took out the LPF and all was FB.  If you try to 
use the internal tuner it will just go nuts with the LPF in line.

KC5GNB

TLW wrote:

>You are correct; no 6 mtr antenna. I've never been on 6 before.
>
>The problem apparently is that I have HF LP filters in the line before
>and after the linear. I need to bypass the filters and see what happens.
>----- Original Message ----- 
>From: "David J. Ring Jr - N1EA" <[email protected]>
>To: <[email protected]>
>Cc: <[email protected]>
>Sent: Monday, May 12, 2003 10:40 PM
>Subject: Re: [Icom] IC-756PROII
>
>
>  
>
>>I would guess from what you are saying, that you don't have a six
>>    
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>meter
>  
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>>antenna, do you?
>>
>>That would probably explain the SWR problem.
>>
>>Cushcraft makes a nice 3 element beam which will get you started, but
>>    
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>I
>  
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>>personally like their 5 element beam.
>>
>>Remember the more elements, the sharper the beam is - you might be so
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>narrow
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>>you'd miss the openings!
>>
>>Also a good 6 meter antenna is stacked halos.  Omnidirectional
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>horizontal
>  
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>>antennas, but stacked for gain.  Each additional antenna gives a
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>"times two"
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>>of power.  Two halos stacked is about 3 dB over a dipole, and three
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>halos
>  
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>>(my favorite) is about 5 dB over a dipole - which is about the same as
>>    
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>a two
>  
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>>element yagi.
>>
>>Of course you could also find the directions to make a quad for six
>>    
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>out of
>  
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>>pvc pipe - make sure you use the white pvc because the grey or black
>>    
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>has
>  
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>>graphite in it and will mess things up for you!
>>
>>73
>>
>>David Ring
>>N1EA
>>----- Original Message ----- 
>>From: "TLW" <[email protected]>
>>To: <[email protected]>
>>Sent: Monday, May 12, 2003 9:15 PM
>>Subject: [Icom] IC-756PROII
>>
>>
>>I bought a new IC-756PROII a few days ago and have been learning to
>>    
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>use it.
>  
>
>>It works well except on 6 meters and it may be an operator problem.
>>    
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>When I
>  
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>>listen on 6 mtrs I don't even hear any noise w/preamp2 on; it makes no
>>difference whether an antenna is connected or not. I tried ANT1 and
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>ANT2;
>  
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>>also set ANT to OFF to be sure ANT1 was active. Then I tried TX and
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>saw
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>>about 30% power on internal meter; external meter didn't wiggle. I
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>checked
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>>SWR and it was infinite on everything I connected including a
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>commercial
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>>dummy load. The ant. tuner was unable to lower it. It seems the
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>circuit is
>  
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>>not connected to the ANT1 or ANT2. Is there something I need to set to
>>    
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>get 6
>  
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>>meters to work?
>>Terry Wells
>>
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>>Your Moderator: Dick Flanagan W6OLD, [email protected]
>>Icom Users Net: Sundays, 1700Z, 14.315 MHz
>>Icom FAQ: http://www.qsl.net/icom/
>>
>>----
>>Your Moderator: Dick Flanagan W6OLD, [email protected]
>>Icom Users Net: Sundays, 1700Z, 14.315 MHz
>>Icom FAQ: http://www.qsl.net/icom/
>>
>>    
>>
>
>
>----
>Your Moderator: Dick Flanagan W6OLD, [email protected]
>Icom Users Net: Sundays, 1700Z, 14.315 MHz
>Icom FAQ: http://www.qsl.net/icom/
>
>  
>

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