What other TT radio has a sub receiver :-)?
John N1JM
> From: doc <kd4e@verizon.net>
> Reply-To: <kd4e@verizon.net>, Discussion of Ten-Tec Equipment
> <tentec@contesting.com>
> Date: Fri, 20 May 2005 10:49:49 -0400
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: Re: [TenTec] Sub-receiver noise redux
>
> Shouldn't Orion be in the Subject?
>
> It is confusing and time-wasting to have to read through 50 lines of
> text in posts to figure out what rig is being discussed.
>
> Just a request to help fellow list members.
>
> IMHO, YMMV ...
>
> Thanks! & 73, doc kd4e
>
>
> John L Merrill wrote:
>> I hear the pops, which is probably the PLL relocking ( common on other
>> radios). But hear no change in noise level.
>>
>> John N1JM
>>
>> TJ Sheffield wrote:
>>
>>> I¹m running firmware version 1.372 and using DX4WIN Ver. 6.04 to
>>> communicate with the Orion on a serial port.
>>>
>>> A master re-set doesn¹t eliminate this condition. Below certain
>>> frequencies the noise disappears. Cycling the power when the
>>> sub-receiver is tuned below these frequencies fixes the condition, at
>>> least until it recurs on a random basis. I am unable to determine if
>>> some combination of band / frequency / mode choice precipitates this
>>> condition.
>>>
>>> Rolling the sub-receiver across the following frequencies shows where
>>> the noise is present or absent (by mode):
>>>
>>> UCW 13.000.640 Present, 13.000.630 Gone
>>>
>>> LCW 12.999.300 Present, 12.999.290 Gone
>>>
>>> USB 12.999.970 Present, 12.999.960 Gone
>>>
>>> LSB 12.999.970 Present, 12.999.960 Gone
>>>
>>> AM 12.999.970 Present, 12.999.960 Gone
>>>
>>> FM 12.999.970 Present, 12.999.960 Gone
>>>
>>> Please try rolling your sub-receiver across these frequencies and let me
>>> know if you detect an audible pop or other indication that something may
>>> be happening in this region.
>>>
>>> In my case, even when the S-5 noise is gone, I can detect an audible pop
>>> when the sub-receiver is tuned across these frequencies.
>>>
>>> Thanks very much,
>>>
>>> TJ Sheffield, KL7TS
>>> Anchorage, Alaska
>>>
>>>
>>> =============================================================
>>> PREVIOUS POST
>>>
>>> On an intermittent basis my Orion sub-receiver will display
>>> approximately five bars of noise while the main receiver may show S-2.
>>> Both receivers are on 20m at present.
>>>
>>> If I tune the sub-receiver down to 13.000.000 the five bars of noise is
>>> still displayed and the hash is still heard in the sub-receiver. If I
>>> tune to 12.999.900 the five bars of hash drops entirely and a more
>>> reasonable 1-1/2 bars of normal background hiss is heard.
>>>
>>> The sub-receiver noise at 13.000.000 and above sounds something like a
>>> mixture of high and low tones that are cycling, burbling and/or pulsing
>>> at a rapid rate. Sorry I don¹t have a more technical description for
>>> this noise! Tuning to 12.999.900 and below the hash disappears and I
>>> hear the normal background hiss of a quiet band.
>>>
>>> If the sub-receiver is above 13.000.000 and I cycle the main power
>>> switch off / on the condition persists. If I tune to 12.999.990 and
>>> cycle the power the condition is cured but a noticeable pop is heard
>>> when rolling from 12.999.900 to 13.000.00 however the sub-receiver hash
>>> is gone.
>>>
>>> When the sub-receiver noise is present the rig is not useable for split
>>> operation but the cure at least is available. I¹m running the latest
>>> firmware.
>>>
>>> These observations will be cross-posted to ³ditsnbits² but I though I¹d
>>> mention it to the group.
>>>
>>> Thanks very much,
>>>
>>> TJ Sheffield, KL7TS
>>> Anchorage, Alaska
>
>
> --
> Thanks! & 73, doc kd4e
>
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