Dr. Ulrich Rohde, N1UL

N1UL

7/28/2018

Episode 208 - Ulrich Rohde - N1UL / DJ2LR

Dr. Ulrich Rohde, N1UL, is a pioneer in RF oscillator and receiver design. Over the last 40 years, N1UL has authored over 60 articles for QST and QEX magazines, in addition to books, academic papers, and articles. Dr. Rohde has made significant scientific contributions to his family business, the Munich based Rohde and Schwarz test equipment company, and to amateur radio manufacturers including Icom. Ulrich, N1UL tells his ham radio story in this QSO Today.

Show Notes

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QRP Labs QCX Transceiver

Website: http://n1ul.com/

Amazon Books by Dr. Ulrich Rohde

Ham radio father: Dr. Lother, Rohde, DJ5LR, co-founder of Rohde and Schwarz

Collins KWM2 Transceiver

First License: 1956, DJ2LRX, with VHF and UHF privileges

Articles about and by N1UL:

First USA callsign: KA2WEU, later N1UL

Telefunken Manpack Transceivers

PRC-104 manpack transceiver

Intermodulation Distortion

AGC Pin Diode Attenuator for the Yaesu FT 101

Receiver Dynamic Range

AG Telefunken AEG6861/12mod

Rohde And Schwarz, Clifton, NJ

RCA Corporation

Software Defined Radio at RCA

Automatic sideband carrier tuning

I.I. Rabi Award, 2015, to Dr. Ulrich Rohde that recognized his outstanding contributions related to the fields of atomic and molecular frequency standards.

Superregerative receiver

Pentode Tube

SSB oscillators suppresses a weak signal

The Q of an Inductor

Numerically controlled DDS oscillator

Grounded Grid Transmitter

FET Transistor

LDMOS up to 50 Mhz.

Icom IC-7850 - Icom made 100 of these radios. Ulrich has serial number 001. Replaced by the IC-7851

Analog Devices AD9914 synthesizer

Favorite mode: SSB

Interesting Rig: Rohde and Schwarz, MT3B manpack transceiver

Metamaterial Structure

Joe Taylor, K1JT

WhatsApp

Spider Net 14.337 MHz

Synergy Microwave, Inc.

5G Cellular Telephone Standard

Ronde and Schwarz Signal Generator for 5G

Swan 53 Sailboat

Beneteau 47 Sailboat

Most excited by: amateur radio is a legal playground to try out new RF devices in every frequency range.

Advice to new or returning hams: use amateur radio as a way to meet and have conversations with interesting people over the air.

The RSS Feed for all audio content from QSO today is available from here.

Please join our QSO Today community by pressing the button below. It is the best way to suggest guests and topics, and provide feedback to Eric, 4Z1UG.

N1UL Ham Shack

AG Telefunken SE-6861 Manpack Transceiver

Rohde and Schwarz M3TR Manpack Radio

Icom IC-7850 HF Transceiver

8 Comments

Ulrich L. Rohde N1UL link

7/31/2018 02:52:41 pm

I saw some comments about the MFJ antenna analyzer and no one mentioned the small ATU I have played with. The analyzer does work well, the R&S version is an overkill. Likewise to test QRP rigs on short antennas is fun .

How can I leave a picture of my new manpack ?

73 de Ulrich , N1UL

Ulrich L. Rohde N1UL link

8/5/2018 06:52:28 am

Help, this is KU1DX, brilliant CW operator but not my picture. Who can please change this ?

73 de N1UL

http://qrznow.com/qso-today-dr-ulrich-rohde-n1ul/

NOT ME

Roland Haas DG1GHR link

11/27/2018 02:57:17 pm

Hallo Herr DR.L. Rohde
Bin ein fähn von Ihren brodukten,
Ich Versuch in DL einige sachten der XK 852 zu bekommen.
Mein Träume ist XK 852 mir 1kW der wird auch wahrscheinlich ein trauen sein eine 1kW.
Vileicht trifft man sich mal auf der QRG

Joey Ferguson W4JF

7/31/2018 04:58:37 pm

Eric,
Wow, what a story. Dr. Rhode is a real treasure and I enjoyed hearing his story very much. What a stunning career and technical genius.
73, Joe W4JF

Ulrich L. Rohde link

8/2/2018 01:02:42 pm

http://qrznow.com/qso-today-dr-ulrich-rohde-n1ul/

THIS IS NOT ME but a member of R&S USA !

Eric 4Z1UG link

8/5/2018 07:39:24 am

Dear Ulrich,

The offending picture was posted by the webmaster of QRZNOW.com. It is not affiliated in any way with QSO Today. He was kind enough to broadcast the podcast to his audience. I sent him a message using the contact form on his website to ask that he use the picture from my website. I have not gotten a reply.

73,

Eric
4Z1UG

Ulrich L. Rohde link

8/11/2018 04:26:27 am

Dear Eric,

firstly and again thanks for the interview and the opportunity to discuss some interesting and hopeful useful topics and I do not want to dominate this website but the picture is not offending but shows a good DXer, KU1DX and he was sitting at my station and deserves the positive credit looking good !

Thanks & 73 de Ulrich , N1UL/DJ2LR (ex KA2WEU)

Gerry Jurrens

5/27/2019 09:43:06 am

This is a thoroughly enjoyable interview with a legendary personage in the world of RF communication. Great job, Eric, as always! The show notes are an incredible treasure trove! So many “pearls of wisdom!”

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N1UL

Episode 208 - Ulrich Rohde - N1UL / DJ2LR

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