[TenTec] Omni VI filters

[Barry N1EU]

I don't see how a PIN diode is going to result in abnormally high output.

What would be a very interesting experiment is to pull all the 6.3MHz i.f.
filters and simply jumper the in/out filter slot pins together (or bridge
them with a reasonable size ceramic disc capacitor).  What you should see
when moving thru and engaging the filter switches is a ramping up output
from 2.4 to 1.8 to 500 to 250.

Another interesting experiment would be to swap the 2.4KHz filter with the
1.8KHz filter and see if the abnormally high output follows the 1.8KHz
filter or if it stays with the 1.8 filter slot.

Barry N1EU

On Mon, Aug 7, 2017 at 9:34 PM, Stan Gammons <s_gammons at charter.net> wrote:

> Hi Barry,
>
> Ok.  It's probably a PIN diode problem like Ken said in another post.
> I'll check those.  Seems odd that the 2.4 Kc filter and the 500 Hz filter
> are both a couple S units lower output than the 1.8 Kc filter.  I have
> another 1.8 Kc filter and a 500 Hz filter. No change when I swap them out.
> I'll see what I can find.
>
>
> 73
>
> Stan
> KM4HQE
>
>
>
> On 08/07/2017 07:12 AM, Barry N1EU wrote:
>
>> It is not normal.
>>
>> Barry N1EU
>>
>> On Mon, Aug 7, 2017 at 7:41 AM, <s_gammons at charter.net> wrote:
>>
>> Hi Greg,
>>>
>>> I have hearing loss also. The increase in gain is fine with me. I just
>>> wondered if it was normal.
>>>
>>> Thanks for your reply.
>>>
>>>
>>> 73
>>>
>>> Stan
>>> KM4HQE
>>>
>>> On Aug 7, 2017, 6:26 AM -0500, Greg S via TenTec <tentec at contesting.com
>>> >,
>>> wrote:
>>>
>>>> Stan....my Omni VI Plus has the same action as yours. When I hit the 1.8
>>>>
>>> button, signal narrows, and gain jumps noticeably. I've actually come to
>>> like it. I have hearing loss, and on past rigs, narrow filters never
>>> helped
>>> me copy weak SSB signal. This one does at times. Different strokes for
>>> different folks. Regards, Greg, KC8HXO
>>>
>>>> --------------------------------------------
>>>> On Sun, 8/6/17, Stan Gammons <s_gammons at charter.net> wrote:
>>>>
>>>> Subject: [TenTec] Omni VI filters
>>>> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com
>>>> Date: Sunday, August 6, 2017, 10:12 PM
>>>>
>>>> Hi everyone,
>>>>
>>>> After adjusting the BFO and TCXO and
>>>> using the Omni VI for SSB and
>>>> digital modes for a little over a week
>>>> now, I kind of like the new to me
>>>> rig.  I noticed a +2 or so S unit
>>>> change when switching from the 2.4 Kc
>>>> filter to the 1.8 Kc filter.  It's
>>>> like there is less loss or more gain
>>>> when switching to the 1.8 Kc
>>>> filter.  I wouldn't think that would be
>>>> "normal"  Switching to the .5 Kc
>>>> filter doesn't do that. S meter reading
>>>> is the same as the 2.4 Kc filter.
>>>> Anyone seen this before?
>>>>
>>>>
>>>> 73
>>>>
>>>> Stan
>>>> KM4HQE
>>>>
>>>>
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