To answer your first question, CW QSK DELAY has nothing to do with keying
the amp. This is the delay before the receiver comes back on after
transmitting. I assume you have EXT T/R connected to the amplifier's keying
line. The EXT T/R value adjusts how long this line stays active after
keying ceases. Setting this to a long value reduces how often the amplifier
relay comes up and down.
Carl Moreschi N4PY
----- Original Message -----
From: "NJ0IP" <Rick@dj0ip.de>
To: "Tentec@Contesting. Com" <firstname.lastname@example.org>
Sent: Wednesday, November 10, 2004 11:58 PM
Subject: [TenTec] Questions about Jupiter
> Hey Guys,
> I added a Jupiter to my Ten-Tec collection.
> FIRST QUESTION:
> I'm trying to interface it to my linear.
> Well, actually it's working, but I want to "tune" the interface.
> Let me say that the Amp is a non-Ten-Tec amp, so no QSK loop.
> The Jupiter has two adjustments:
> 1. CW QSK DELAY
> 2. EXT TR DELAY
> I've played with both and can't seem to see any difference.
> Normally I would expect one to controll the delay the Jupiter
> allows the linear's TR relay to switch before transmitting the
> first dit, and the other to be the hang time before it releases
> the external TR relay to return to RX mode.
> Regardless of where I set either of them, the Henry SS750HF
> linear seems to transmit OK, including the first dit. I have no
> means to measure, but on an external RX, I can't notice any
> significant clipping of the first character.
> I've adjusted both controls up and down and they seem to do the
> same thing - affect the hang time.
> I have no way of measuring the delay time when activating the
> Can someone please explain to me the difference between these
> SECOND QUESTION:
> What does the "TX ROLL OFF" do?
> I didn't seem to find it in the manual.
> THIRD QUESTION:
> I feel a bit ashamed asking this one.
> This has been discussed many times, but since it wasn't accute, I
> paid little attention.
> What is a good external loudspeaker to use with the Jupiter.
> This rig is my SSB rag chew rig, not my CW contest rig, so
> fidelity is important.
> FOURTH QUESTION:
> Has anyone had any experience using external mic-mixers to
> improve TX audio fidelity?
> If so, what have you used? I'd like to get into that.
> As for my evaluation of the unit, well I would say I prefer the
> Jupiter for Monday through Friday use, and the Orion on weekends
> when the bands are overcrowded! Clearly the Jupiter is a LOT
> easier to use and I'm lazy.
> Thanks for any tips.
> DJ0IP / NJ0IP
> Munich, Germany
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