Mark Erbaugh wrote:
>Mark,
>
>You can connect an external speaker to the jack that feeds the internal
>speaker. However, you need to make sure that the external speaker is not
>grounded. You can get around the no ground limitation by using an isolating
>transformer. On suggestion from N4PY, I made up an interface using a couple
>of PA system 70 volt line transformers back to back (secondary to secondary)
>to keep the impedance the same. The ones I use came from Radio Shack a few
>years ago (cat no 32-1031B), but I think they were discontinued a couple of
>years ago.
>
>Another alternative that I am now using is to feed the line output (from the
>Accessory port) to an old MFJ 784B DSP filter. The filter seems to work well
>with the Pegasus and allows for much narrower filtering than the Pegasus
>has. The pinout on the Accessory jack is the same as the TNC pinout on the
>784B except that you may want to wire pin 5 on the 784B to the External T/R
>jack on the Pegasus so that the filter will be bypassed on Tx (so you can
>hear your sidetone if it is outside the passband of the filter).
>
>73,
>Mark
>
>
>
>----- Original Message -----
>From: "Mark Hoffman" <markho@mitylite.com>
>To: <tentec@contesting.com>
>Sent: Thursday, October 12, 2006 1:01 PM
>Subject: [TenTec] Pegasus Speaker
>
>
>
>
>>I recently got a Pegasus up and running.
>>
>>The internal speaker is working ,but lacks in sound quality and I
>>usually do not like headphones.
>>
>>What is the best way to get an external speaker working? External amp?
>>
>>
>>Mark
>>W7GCY
>>
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>>
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>>
>>
>>
>
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>
>
Rat Shack has a 1:1 miniture transformer that works very well for this
purpose
Ernie
N1SW
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