[TenTec] Paragon 585 vs 586

[ve1bn@ns.sympatico.ca]

Ken -

The Paragon II can be easily discerned to be a "II" because it is easy
to see from the front panel right under the Ten-Tec logo.  The original
Paragon just has "Paragon" on the front panel.  This all you need to
distinguish them.

Saves digging around to see the label, wouldn't you say?

73 - Don


----- Original Message ----- 
From: "Ken Brown" <ken.d.brown at verizon.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Saturday, January 14, 2006 4:04 PM
Subject: Re: [TenTec] Paragon 585 vs 586


> You can determine whether it is a Paragon or a Paragon II by looking at
> the model and serial number label on the back panel. The original
> Paragon is model 585 and the Paragon II is model 586. I you cannot look
> at the rear panel, or if the label is missing,  there are some
> differences on the front panel that will tell which Paragon it is. The
> original Paragon has a "label" function by which you can  associate
> alphanumeric labels with memorized frequencies. There are  silk screened
> letters next to most of the pushbuttons on the gray panel which
> surrounds the VFO knob. The Paragon II only has labels ON the buttons,
> NOT next to them.
>
> Regarding the "AM transmit " on the Paragon II, it is really SSB with
> reinserted carrier, and you can select which sideband you want to
> transmit. This is not the same AM produced by actually modulating an RF
> amplifier stage in the transmitter, and it also differs from most recent
> rigs which use a balanced modulator to produce DSB and then reinsert a
> carrier. Most rigs that have AM transmit mode these days use the usual
> balanced modulator to produce DSB. They either introduce a DC bias to
> the balanced modulator to unbalance it in order to let some carrier
> through, or the reinject the carrier in some later stage, all of this
> without passing the DSB through the sideband selecting filter. In the
> Paragon II the DSB from the balanced modulator does go through the
> sideband selecting filter. The carrier must be reinserted after the SSB
> filter. This results in a signal which can be demodulated by an AM
> detector with no BFO, yet quite different from typical AM. It is
> bandwidth limited by not just the audio circuitry, also by the SSB filter.
>
> DE N6KB
>
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