Thanks Bob, will do.
Could you please point me to or send me the downloaded manual you have ..
would be nice to have notes for setting the driver and final bias.
So what is your output on the other bands like?
I have a feeling my unit needs some aligning as I cannot get the ALC led to
come on before the power supply gets tripped at like 5.5A on 40/30/20. And
the drive adjustment is sooo tricky .. it all happens between 5 and 6 on the
dial. At 5 no output, at 6 too much and it cuts out. Are they all like
that?
----- Original Message -----
From: "Bwana Bob" <wb2vuf@verizon.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, April 28, 2010 11:21 PM
Subject: Re: [TenTec] Century/22 power out
> Rob:
>
> This is interesting. My C 22 has low drive on 80 m as well. It seems to
> get worse as the rig warms up. I checked the 80 m bandpass filter and
> it looks OK. I am thinking that maybe the 80 m crystal, which is 10 MHz,
> has low output and I was about to replace it, but first I'd like to
> learn what the 40 m null pot does and how it affects 80 m. By the way,
> the 80 m bandpass filter is not adjustable, but the filters for the
> other bands are.
>
> I have an original manual plus a downloaded one (not from Ten Tec) which
> has a note for setting driver and final bias, but nothing on the null pot.
>
>
> Please let me know what you find out.
>
> Thanks.
> 73,
>
> Bob WB2VUF
>
>
>
>
> Rob Vaughan wrote:
>> Hi Walt,
>>
>> Thanks for the reply. I downloaded the manual available from Ten-Tec
>> online
>> (previous owner still looking for the original ;-) before I even picked
>> up
>> the rig and there is no alignment procedure in there.
>>
>> There is no description of what the "40m null" adjustment does or hint on
>> how to adjust it. Just a pic of the board that identifies it.
>>
>> Anyone have the alignment procedure, or can I ask Ten-Tec for a copy of
>> that?
>>
>> Thanks and 73,
>>
>> de VE3XGB - Rob
>>
>>
>> ----- Original Message -----
>> From: "Walt Amos" <waltk8cv4612amos@att.net>
>> To: "Rob Vaughan" <robvaughan@sympatico.ca>
>> Sent: Tuesday, April 20, 2010 10:50 PM
>> Subject: Re: [TenTec] Century/22 power out
>>
>>
>>> If you have the manual or can download it the alignment sequence is
>>> spelled out. Naturally you can send it to TenTec but that would probably
>>> cost more than the rig is worth. Someone probably aligned it with out
>>> taking the 40 M null into consideration or didn't know about it and it
>>> is
>>> eating the 80M signal.
>>>
>>> Walt K8CV Royal Oak, MI.
>>>
>>>
>>> ----- Original Message -----
>>> From: "Rob Vaughan" <robvaughan@sympatico.ca>
>>> To: <tentec@contesting.com>
>>> Sent: Tuesday, April 20, 2010 8:03 PM
>>> Subject: [TenTec] Century/22 power out
>>>
>>>
>>>> Hi All,
>>>>
>>>> Recently took ownership of a Century/22 that I really like but a little
>>>> bit disappointed by the "20 watts out" claim. Mine puts out about 15W
>>>> on
>>>> 40m and 30m, but as little as 8W on 80m and 6W on 10m. It would be
>>>> nice
>>>> to have closer to 20 especially on 80m where noise levels are higher of
>>>> course. I put my ammeter inline with the power supply and can see it
>>>> only draws 2.5A when the drive control is full clockwise on 80m whereas
>>>> I
>>>> can drive it to 5.5A on 40m well before full clockwise drive and cause
>>>> the 979 supply to cut-out (as its supposed to).
>>>>
>>>> When I spoke to Paul at TenTec he suggested it could be the 80m
>>>> bandpass
>>>> filter (would that show low current though?) or that perhaps the "40m
>>>> null" adjustment needed adjusting. He said that can impact output on
>>>> 80m. I should have asked him what it does because I don't understand
>>>> this
>>>> adjustment. Perhaps someone out there can explain it to me. Don't
>>>> want
>>>> to go adjusting something before I know what the impact/pitfalls are.
>>>>
>>>> Thanks for all the help and 73,
>>>>
>>>> Rob - VE3XGB
>>>> _______________________________________________
>>>> TenTec mailing list
>>>> TenTec@contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
>>
>> _______________________________________________
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