[Orion] Re: [TenTec] Re: Orion qsk and 425

[Joe Giacobello <k2xx@swva.net>]

Bob, thanks for your help.  I presume that you have two amps and that's 
why you're using both ext t/r relays?

I was using settings similar to yours except I was using 100% QSK delay 
and 20% amp ext t/r setting.  I've increased the amp delay to 50% and 
there is clearly less relay clicking. I'm pretty sure that 20% worked OK 
in the past, and I wonder if this setting may have changed with version 
1.371?  I still think that the 100% QSK delay is too short at speeds 
less than about 20 wpm.

I also have PTT in CW set to KEY, but I really wasn't sure what this 
setting was doing.  I went back to the revision description and I now 
think I see:  it allows me to use pin 3 on the AUX I/O (and/or pin 3 of 
the front panel mike connector) to send CW from a computer.  Frankly, I 
didn't understand that at first.  I now use DX4WIN from an LPT port to 
send CW via a transistor keying interface, and I wonder if using the AUX 
I/O would allow me to eliminate that interface?  Is that what you're doing?

I also do not operate QSK and have not seen any problems in using v. 
1.371 with the 425.  However, I did notice that overshoot you were 
talking about but wasn't sure whether it was happening with earlier 
revisions or not.

I'm not sure what you mean by "for my pc I let it just run in cw."


Thanks for your input.  (BTW, I don't know how I missed your first 
reply.  It may have gotten caught in my ISP's spam trap.)


73, Joe



bob finger wrote:

> Hi Joe:  and I sent you an answer directly.
>
> I'll try again as I do not have the original message I sent.  Plus I am
> copying the reflector.
>
> I use the ptt outputs of the Orion.  Menu sets for Orion are:
>
> menu = tx = keying loops 1 and 2 off; ext t/r delay 1 and 2 at 50%
> mernu=cw=cw qsk delay 70%; ssb = cw jack ptt off; ptt in cw as key
>
> for my pc I let it just run in cw, and I can use either ptt or vox in ssb
>
> This way the Orion works as normal in cw with a bit of delay at the end but
> not enuff to harm anything.  It keeps the relays in the 425 (and in the
> alpha 78) from following keying.  I do not use qsk at all with the Orion and
> the amps.  I can also hit the footswitch and lock the key for tuning.  It is
> very easy using N1MM logger.  I type in cw, then hit the footswitch to tune
> and then type lsb/usb to go back to ssb if I started there.
>
> The Orion and 425 work together (or did with early firmware!) I have not
> tried it with 1.371 and know others are having difficulty with the 425 and
> Orion using 1.371 firmware.  TT is working on the problem.
>
> The other problem with Orion and 425 is output power overshoot.  If I am
> running the 425 right at the high edge ie grid current at about max then the
> first dit or two will overshoot and overdrive the 425.  I have to turn the
> Orion output power down about 5 watts to keep that from happening.  The
> difference in output power is minimal so no big deal.  Without the grid
> overdrive led tho, one would never know it was happening.  I have a grid
> overdrive protection circuit built in, and it can trip the amp off....so I
> am careful to set the output power of the Orion before keying the amp.  I
> have to set the Orion ouput on 160/80cw to 25 watts and on 40 cw to 40 watts
> to avoid initial overdrive.  (I use the alpha 78 on the high bands)
>
> IMO real qro qsk can only be had by using a separate tx/rx and rx antenna.
> No clicking/clacking or anything else.  The only other solution is a pin
> diode switch, but that is another set of challenges.  The Ameritron qsk
> switch does work quite well but is very susceptible to transients on the
> feedlines. The only time I would want true qsk is traffic handling, and I do
> not do that anymore!
>
> Hope this helps.   73 bob de w9ge
>
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>
>  

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