<div dir="ltr"><div>Thank you! I called them but they say they don't do this particular piece of equipment, which is strange, because on their web site they have a list of RF-related equipment they can do, and this box checks almost every item on their list. They didn't ask me if I have the service manual, so i guess they must have more than enough work already to deal with something new. :)</div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><br><div>73,<div>K1CPR</div><div>Juan</div></div></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Jun 10, 2025 at 3:03\u202fPM Richard Heckbert <<a href="mailto:richard.heckbert@gmail.com">richard.heckbert@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg-5048203658066543465">
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<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif">Hi Juan,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif">Congratulations on the new piece of kit. Sounds like a great addition. Back when I was teaching electronics at a trade school, we would get all our equipment (that we couldn\u2019t
do ourselves) repaired and calibrated at Hayes Instruments in Billerica. They\u2019re located just south of Billerica Center on Boston Rd. They were a great company to deal with then and looking at their website, it appears they do the kind of calibration you\u2019re
looking for<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif"><a href="https://hayesinstruments.com/" target="_blank">https://hayesinstruments.com/</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif">Just another option for you<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif">Rick \u2013 W1OLU<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-family:Calibri,sans-serif;color:black">From:
</span></b><span style="font-family:Calibri,sans-serif;color:black">bars <<a href="mailto:bars-bounces@w1hh.org" target="_blank">bars-bounces@w1hh.org</a>> on behalf of Juan Jiménez via bars <<a href="mailto:bars@w1hh.org" target="_blank">bars@w1hh.org</a>><br>
<b>Reply-To: </b>Juan Jiménez <<a href="mailto:k1cpr@bd5.com" target="_blank">k1cpr@bd5.com</a>><br>
<b>Date: </b>Tuesday, June 10, 2025 at 11:25\u202fAM<br>
<b>To: </b>w1hh <<a href="mailto:bars@w1hh.org" target="_blank">bars@w1hh.org</a>>, "<a href="mailto:mmra@groups.io" target="_blank">mmra@groups.io</a>" <<a href="mailto:mmra@groups.io" target="_blank">mmra@groups.io</a>><br>
<b>Subject: </b>[bars] Motorola R2001DHS<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><a href="https://wiki.w9cr.net/index.php/Motorola_R2001D" target="_blank">https://wiki.w9cr.net/index.php/Motorola_R2001D</a><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Sunday I drove down to PA to pick up a Motorola R2001DHS (an R2001D with the high stability oscillator option).<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><b>Wow.</b> This thing is the most complete piece of radio test equipment I have ever been able to find (and afford), even if it was made in the 1980's. It was worth the 14 hour drive there and back, and the reminder than all of Central
PA smells like manure this time of the year. It makes the Swiss Army Knife look like something that came out of a box of Cracker Jacks.<u></u><u></u></p>
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Spectrum Analyzer<u></u><u></u></li><li class="MsoNormal">
Duplex Generator<u></u><u></u></li><li class="MsoNormal">
Modulation Oscilloscope<u></u><u></u></li><li class="MsoNormal">
Frequency Counter<u></u><u></u></li><li class="MsoNormal">
AC/DC Digital Voltmeter<u></u><u></u></li><li class="MsoNormal">
RF Wattmeter/Signal-Level Meter<u></u><u></u></li><li class="MsoNormal">
General Purpose Oscilloscope<u></u><u></u></li><li class="MsoNormal">
Multimode Code Synthesizer<u></u><u></u></li><li class="MsoNormal">
Distortion/SINAD Meter<u></u><u></u></li><li class="MsoNormal">
Sweep Generator<u></u><u></u></li><li class="MsoNormal">
DTMF Encode/Decode<u></u><u></u></li><li class="MsoNormal">
Printer Port<u></u><u></u></li></ul>
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<p class="MsoNormal">I missed the auction for the one with the coffee maker option.
<span style="font-family:"Apple Color Emoji"">\U0001f606</span><u></u><u></u></p>
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Frequency range is 10 kHz to 999.9999 MHz with a resolution of 100 Hz. Output in 50 ohms is 0.1 uV to 1 Vrms on FM and 0.1 uV to 0.4 Vrms on AM.<br>
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The monitor mode measures frequency from 1 MHz to 999.9999 MHz. The auto-ranging CRT display has a resolution of 10 Hz for frequency error. Input sensitivity is 1.5 uV for 10 dB EIA SINAD. The spectrum analyzer has a 75 dBm dynamic range.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Anybody know anyone who works on calibrating these? The service manual is straightforward (and hefty) but I don't have the additional equipment to do the calibrations.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">And no, this one is not going to Ukraine unless I find a sponsor with deep pockets who wants to buy it for them. Too expensive for that, way out of my meager charity budget...<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">73,<u></u><u></u></p>
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<p class="MsoNormal">K1CPR<u></u><u></u></p>
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<p class="MsoNormal">Juan<u></u><u></u></p>
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