[DARARepeater] TNG - Thursday, July 30 - Correction - Jeremy Tech Presentation

[Dana Whitlow]

i have two comments about the exam questions:

First, the Hilbert transform is used to generate an in-phase-
quadrature phase pair from a "real-only" signal, and is used
only in certain architectures.  The most basic operation of
generating an SB signal from voice, at least, is simple
frequency translation, which can be implemented without
a Hilbert transform or any other fancy footwork- thus,
the existence of so-called "filter-type SSB transmitters".

 2nd one, an old piece of humor from the 1960's and
thereabout.   1 dB was noted to be the typical amount
by which a teen would reduce the volume of his radio
or phonograph when yelled at to "turn that damn thing
down!".  How many of you remember this era?

Dana

On Mon, Jul 27, 2026 at 8:31 AM Mark Erbaugh via DARARepeater <
dararepeater at mailman.qth.net> wrote:

> Correction
>
> TNG – Thursday, July 30 - Jeremy Techg
>
> DARA Clubhouse, 6619 Bellefontaine Rd. Dayton, OH 45424.  The meeting
> begins around 7pm.  The presentation begins at 7:30pm.
>
> Jeremy Hong will give a presentation on some of his newly acquired tech,
> including a HP 8.5 digit multimeter (I thinks that’s what he said). He
> issued a special invitation to our long-time leader, Tom Holmes.
>
> =================
>
> I am looking for presentations. If you have something you would like to
> share, please email me at:
>
> mark.election at gmail.com
>
> 73,
> de Mark, N8ME
>
>
>
> *License Exam Quiz #381*
>
> *de Steve, AE8AT *
>
> The (relatively) cool weather last week prompted the quiz to take a
> vacation and leave us with only some random questions from the least used
> areas of each question pool.
>
>
> T4B06 Which of the following controls could be used if the voice pitch of
> a single-sideband signal returning to your CQ call seems too high or low?
>
> A. The AGC or limiter
>
> B. The bandwidth selection
>
> C. The tone squelch
>
> D. The RIT or Clarifier
>
>
> G5B01 What dB change represents a factor of two increase or decrease in
> power?
>
> A. Approximately 2 dB
>
> B. Approximately 3 dB
>
> C. Approximately 6 dB
>
> D. Approximately 9 dB
>
>
> E7F03 What type of digital signal processing filter is used to generate an
> SSB signal?
>
> A. An adaptive filter
>
> B. A notch filter
>
> C. A Hilbert-transform filter
>
> D. An elliptical filter
>
>
>
> Answers:
>
> T4B06 = D
>
> G5B01 = B
>
> E7F03 = C
> ______________________________________________________________
> DARARepeater mailing list
> Home: http://mailman.qth.net/mailman/listinfo/dararepeater
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:DARARepeater at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/dararepeater/attachments/20260727/0b23bf12/attachment.html>