See the tentec website about the Orion working with an ACOM amplifier.
There is a filter that fixes this problem.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
----- Original Message -----
From: "Kamal Sirageldin" <firstname.lastname@example.org>
Sent: Monday, February 13, 2006 11:15 PM
Subject: [TenTec] Orion V2.054 Notes
> I decided to try the V2.054 Beta upgrade. Did the hardware mod for the
> Sweep (works great).
> I did seem to find one problem, although I wish I could provide more
> detailed information to help determine the cause.
> Since last spring, I have used an Acom 2000A amp with the Orion - no
> problems. I use V1.372 firmware.
> After installing V2.054, I cannot key the amp without it throwing the amp
> into protection. Can't tell if it is because the initial RF waveform
> of the Orion is too high, or if RF is present before the AMP Key line keys
> the amp. I use a simple keying cable from the Orion AMP KEY jack to the
> key line input.
> The strange thing is that the rig keying throws the amp into protection
> when I have the Orion RF output power set to one (1) watt (normally I
> the amp with 42 watts).
> CW QSK is set for 21%.
> EXT T/R Delay 1 is set for 23%
> Something strange is going on - and it's definitely a V2.054 issue, I
> re-installed 1.372 and things work fine with the amplifier. The 2.054
> problem with throwing the amplifier into protection is both in CW and SSB,
> and on multiple bands.
> I also noticed that the "MON" seemed to have feedback or was extremely
> sensitive to level - even when cranked down to a "2". This did not happen
> with V1.372 - I probably need to change the mic gain and SP settings to
> different values for 1.372 vs 2.054. I use a Heil Quietphone Headset with
> HC-4 element.
> I noticed that the Sweep function works great in V2.054.
> Appreciate how compressed some of the setup knob turning is with 2.054.
> Setting AGC Threshold is no longer an endless knob turning affair.
> The audio fidelity in 2.054 does not distort with very strong signals like
> it sometimes did in 1.372. Good job.
> I'm not sure, but the receive audio sounds smoother in 2.054.
> Screen display seems crisper too.
> S-Meter is definitely more generous with strong signals. Never seen so
> needle pinning signals.
> Re-installed 1.372 so I could use the amp, but looks like lots of nice
> touches in V2.054.
> 73 Kam N3KS
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