An LPF relay could be a suspect, or a component in the LPF for those bands may
have changed value. (Apples and oranges here, but I had an Argosy way back
when that went to TT for warranty service on an unrelated problem. When it
came back the service notes showed "low output on 15M" in testing and that a
cap in the LPF had been replaced to correct it.)
73, es GL, Al
On Sat June 29 2013 10:07:51 am Carl Moreschi wrote:
> It sounds like a low pass filter relay problem to me.
>
> Carl Moreschi N4PY
> 121 Little Bell Dr.
> Hays, NC 28635
> www.n4py.com
>
> On 6/29/2013 10:44 AM, Kim Elmore wrote:
> > Nope, that's not it. It's into a 50 ohm dummy load and whether I not I
> > use the auto turner, I get the same result.
> >
> > Kim N5OP
> >
> > On 6/29/2013 9:24 AM, John Bescher wrote:
> >> Is there a chance that the SWR is higher on those bands so the Orion
> >> II reacts by less power?
> >>
> >>
> >> John Bescher, N4DXI
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: Kim Elmore <cw_de_n5op@sbcglobal.net>
> >> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> >> Sent: Fri, Jun 28, 2013 11:17 pm
> >> Subject: [TenTec] Orion II Low Output on 12 and 15 m
> >>
> >>
> >> I have an Orion II and have noticed over time that its output on the 15
> >> and 12 m bands is lower than all the other bands on LCW, UCW and FSK.
> >> With the PWR set to 100, the 160 through 20 m bands all show about 105 W
> >> output using a 13.8 VDC power supply and a known accurate B&W 334A dummy
> >> load. This output is stable regardless of whether the internal tuner is
> >> used. Output on the 10 m band is 90 W, but on the 15 and 12 m bands,
> >> output is about 70 W. also, the ALC indicator is NOT lit at the full
> >> power output setting on either the 15 or 12 m bands, but IS lit on all
> >> other bands. The ALC indicator will light on the 15 m band when the PWR
> >> setting is adjusted down to 76 or below and when adjusted down to 84 or
> >> below on the 12 m band. Any adjustment above this level results in the
> >> ALC light being extinguished. On the 12 and 15 m bands any power output
> >> is not affected until the PWR setting is at or below these levels. The
> >> power indicator meter on the Orion II unit itself indicates about 95 on
> >> all bands except 15 and 12 m. On 15 m it indicates 82 and on 12 m it
> >> indicates about 88.
> >>
> >> I had mentioned this earlier and had tried adjusting the internal ALC
> >> level. This didn't affect the 12 or 15 m bands but did affect the
> >> others. I exercised all of the plugs internal to the radio, but it made
> >> no difference. Has anyone else experienced this? If so, what's the fix?
> >>
> >> Kim N5OP
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> >>
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> >
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