[TenTec] Side tone

[RM]

With my Heil headphones plugged into the Orion II's headphone jack I used to
get a 'coarse' side tone.  With the headphones plugged into my Icom SP-20
speaker's headphone jack the side tone was clean (speaker leads are
integrated with a ferrite core near the Orion's back panel).  Sounded like a
classic RFI issue.

Then, I took a RadShack inch long cylinder ferrite core, and wrapped two
turns of the Heil's headphone cord through it near the plug............No
more side tone coarseness when plugged into the Orion II, and never when
plugged into the Icom SP-20 headphone jack.

Have you considered RFI; since owning both an Orion 1 and II I've noticed
that the rig appears to be more sensitive to RFI when compared to my Icom's
775 and 765 (shack is up on the second floor......always had RFI issues that
had to be resolved.


Ron / NU1U

-----Original Message-----
From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
On Behalf Of John B. Egger
Sent: Tuesday, November 21, 2006 22:15
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Side tone

Robert Redmon wrote:

>Is anyone else with an O2 displeased with their cw sidetone?  I have 
>had my Orion 2 since March and have struggled with the side tone from 
>day one.  I am not sure how to describe it; it just never sounds quite 
>right.  Using my Icom and Yaesu radios for a while makes the problem 
>seem even worse.  Make and break are just not clean .almost sounds like 
>a chirp with a click on make.  No matter what frequency I set it at, 
>when keying the radio (not when using the spot button) it sounds harsh.  
>Headphones makes it worse.  After the firmware upgrade to 2.037j, it seems
to have gotten worse.
>
> 
>
>Not related to power level.  Same at all power levels.  Not an rf problem.
>Not a headphone problem.I have several.all sound the same.various
impedance.
>
>
> 
>
>Bob K5SM
>
> 
>
>_______________________________________________
>TenTec mailing list
>TenTec at contesting.com
>http://lists.contesting.com/mailman/listinfo/tentec
>
>  
>
About a week after receiving my O2 I began a thread "O2 Sidetone...RST599C"
(around October 1 2006). The problem only occurs occasionally, and I haven't
determined the set of bandwidth, noise reduction, etc. settings common to
it. Often it's clear as a bell, but I was so concerned that I got my old
Century 21 out to act as a monitor. 
The O2's signal was fine, so I haven't used the C21 since.

-- 
--John K3GHH
Registered Linux User #291592

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