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John & All:<br>
<br>
The parts are rated for operation up to heat sink temperatures of 80
degrees C,<br>
so a heat sink temperature of 120 degrees F or about 50 degrees C is
not <br>
a damage issue.<br>
<br>
I will work with Phil to get the manual revised this weekend.<br>
<br>
Are there any other errors or changes needed to the PennyWhistle<br>
manual, as long as we are going to release a new revision?<br>
<br>
--- Graham / KE9H<br>
<br>
==<br>
<br>
<br>
On 3/6/2012 4:25 PM, John Westmoreland wrote:
<blockquote
cite="mid:CAFtYB4wt5OSYBNENPryWRedZ3BoYPNzw0JfYv8P-aaQOoxBk6w@mail.gmail.com"
type="cite">
<pre wrap="">***** High Performance Software Defined Radio Discussion List *****
</pre>
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Pete,
<div><br>
</div>
<div>My amp got pretty hot during this process - I am wondering
now if anything is damaged. </div>
<div><br>
</div>
<div>This obviously needs to be fixed - in the documentation.
Maybe we need to have an errata section where we accumulate
these sort of items so no one else has to experience it. Got
out my infrared gun and was measuring temps in the 120 degrees
Fahrenheit range while the amp was just sitting there - so I
knew something was wrong. </div>
<div><br>
</div>
<div>73's,</div>
<div>John</div>
<div>AJ6BC<br>
<br>
<div class="gmail_quote">On Tue, Mar 6, 2012 at 2:21 PM, n3evl <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:n3evl@townisp.com">n3evl@townisp.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">***** High
Performance Software Defined Radio Discussion List *****<br>
<br>
<br>
<div bgcolor="#FFFFFF" text="#000000"> John,<br>
<br>
I think you are correct. Below is my e-mail from
11/21/2009. I was under the impression that the
documentation had been changed to correct the
inconsistency back then but apparently not.<br>
<br>
Pete, N3EVL<br>
<br>
"...***** High Performance Software Defined Radio
Discussion List ***** <br>
<br>
The connection diagram on page 5 of the Pennywhistle
Assembly and Operating Instructions document shows the
3-pin header numbers with 1 labeled as Bias Control and 2
labeled as ground. <br>
This appears to be at odds with the schematic which shows
1 ground and 2 Bias Control. <br>
<br>
Since tests with my ohm meter agree with the schematic, it
appears that the connection diagram is incorrect. <br>
<br>
The last thing I have to do is wire up the control cable
to this header and the DB25 - want to make sure I have it
correct. <br>
<br>
Pete, N3EVL <br>
__________________"<br>
<br>
<br>
<br>
<br>
<br>
On 3/6/2012 4:24 PM, John Westmoreland wrote:
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<pre>***** High Performance Software Defined Radio Discussion List *****
</pre>
<br>
<fieldset></fieldset>
<br>
<div>(resend without the diagram attached)</div>
<div><br>
</div>
<div>HPSDR,</div>
<div><br>
</div>
<div>I did a search of e-mail that I have - not
exhaustive by any means - but has anyone noticed that
the Bias Control and Ground Pin numbers are reversed
in the below diagram? (please see PennyWhistle
connection diagram in the pdf on the web-site)</div>
<div><br>
</div>
<div>I wondered why my amp was starting to heat up when
it wasn't doing anything.</div>
<div><br>
</div>
<div>73's,</div>
<div>John</div>
<div>AJ6BC</div>
<br>
<br>
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