QRZ! Ham Radio 4/QRZ Ham Radio Callsign Database - Volume 4.iso/digests/infoham/940982.txt

Internet Message Format | 1994-11-13 | 12KB

Date: Thu,  1 Sep 94 04:30:12 PDT
From: Info-Hams Mailing List and Newsgroup <[e-mail]>
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Subject: Info-Hams Digest V94 #982
To: Info-Hams


Info-Hams Digest            Thu,  1 Sep 94       Volume 94 : Issue  982

Today's Topics:
                  Are ordinary batteries chargeable?
                 IC-R71A Sensitivity Problem ? Help!
                        I could use a Beverage
                Is the moon reflective of radio waves?
                  Ten-Ten Number - where to get one?
                             Thanks, ARRL

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Problems you can't solve otherwise to [e-mail].

Archives of past issues of the Info-Hams Digest are available
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We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party.  Your mileage may vary.  So there.
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Date: Wed, 31 Aug 1994 03:21:09 GMT
From: ihnp4.ucsd.edu!munnari.oz.au!yarrina.connect.com.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!alsvid.scu.edu.au![e-mail]
Subject: Are ordinary batteries chargeable?
To: [e-mail]

The "Inteligent Chargers" I have seen, I have noted they
have  no power cord.  Thus I am led to believe that they
are not in fact "Chargers" but purely Condition the battery
to obtain a longer usefull life.

Anyone out there who has purchased one of these
please inform if this is the case.

-----> Josh Mayo.

------------------------------

Date: 31 Aug 94 22:25:00 GMT
From: [e-mail]
Subject: IC-R71A Sensitivity Problem ? Help!
To: [e-mail]

##########################################################################

I have an Icom R-71A (secondhand) whose sensitivity rolls off about 12 dB
from 14 to 30 MHz.  Checks of the front end switched filters indicate
everything is ok with no unusual losses.  However, in looking at the LO
injection voltage to the first mixer, the 22-30 MHz VCO range drops off
dramatically in output when going up in frequency, like a 10 to 1 drop.
 This does not occur over the rest of the tuning range.

The VCO in the synthesizer is a JFET followed by two bipolars, which appear
to just be wideband amplifiers.  All the VCO and amplifier DC bias voltages
seem normal according to values in the tech manual.

Has anyone else seen this in an R-71A?  Is there a known fix for this?

Please reply direct to "[e-mail]" or to the net.  Thanks.


73  John WB4LNM

NNNN
###########################################################################

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Date: Wed, 31 Aug 1994 01:09:46 GMT
From: ihnp4.ucsd.edu!swrinde!gatech!newsxfer.itd.umich.edu!zip.eecs.umich.edu!panix!ddsw1!redstone.interpath.net!news.sprintlink.net!demon!betanews.demon.net![e-mail]
Subject: I could use a Beverage
To: [e-mail]

In article <33pn2p$[e-mail]>, W. E. Van Horne writes:

> For transmitting, you want the maximum signal strength.  For receiving,
> you want the maximum SIGNAL TO NOISE ratio.  At high frequencies <30 Mhz
> modern receivers provide noise figures well below the level of natural
> QRN, so you can always amplify received signals as much as necessary to
> provide audible signals, no matter how weak they are, if the signal to
> noise ratio is adequate.  Beverage antennas deliver low signal strength,

> but even lower noise, so are superior for receiving.
>
> 73, Van - W8UOF

You cannot always amplify received signals as much as necessary to improve
audible signals.

Often on our AM band dxpeditions using Beverages, we are limited by
atmospheric noise, the level of which is dependent on the K index at that
time.  Some mornings the noise level is high, and signals get drowned out,
other days the noise is almost non-existant, and even very low signal
strengths make it through.

Just for info, we use 500 metre long beverages, aerial impedance
transformers, tuned pre-amps giving just over 30dB variable gain, and Drake
R7's or NRD 535's.

73, Mark Hattam   G4KGA    [e-mail]     World DX Club

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Date: 31 Aug 1994 03:59 PST
From: ihnp4.ucsd.edu!swrinde!gatech!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!unixg.ubc.ca!reg.triumf.ca![e-mail]
Subject: Is the moon reflective of radio waves?
To: [e-mail]

In article <33l3kp$[e-mail]> [e-mail] writes:
>Is the moon reflective enough of radio waves to use it as a reflective radio
>telescope?

My question is:  Is the moon REFRACTIVE (and homogeneous) enough
to use as a lens for an ultra-long-wavelength telescope?

Donald Arseneau                         [e-mail]

------------------------------

Date: 30 Aug 1994 23:34:21 -0700
From: nntp.crl.com!crl4.crl.com![e-mail]
Subject: Ten-Ten Number - where to get one?
To: [e-mail]

In article <340d9i$[e-mail]>, [e-mail] (Thom Forbes)
wrote:

> Can anyone tell me how to enroll in the Ten-Ten Club?

The Area Manager for Area 2 (assuming you live in area 2) is:
    Larry Berger, WA2SUH
    9 Nancy Blvd
    Merrick, NY 11566

Include:

Contact info (log data) from ten 10-x members, including date/time,
frequency, their call sign, name, QTH and 10-10 number.

$7.00 annual dues, check/MO made out to "10-10 International Net, Inc"

Or, you can receive the 10-10 Information Manual, for $1.00 and a
return address label (no SASE) to:
    Mike Elliot, KF7ZQ
    10-10 Information Manager
    9832 W. Gurdon Court
    Boise, ID 83704


Lou

Correspondents NOTE:  Inbound mail bundle of 27 Aug 94 was munged.
       Please Resend your mail if it was sent on or about this date.
------------------------------------------------------------------------
------------------------Usual Disclaimers Apply-------------------------
Internet:  [e-mail]                    [e-mail]
Ham Radio Packet: N5SGL @ K3WGF.#SAT.TX.USA   tcp/ip: [e-mail]
------------------------------------------------------------------------

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Date: Wed, 31 Aug 1994 14:59:24 GMT
From: psinntp!arrl.org![e-mail]
Subject: Thanks, ARRL
To: [e-mail]

Jeffrey Herman ([e-mail]) wrote:

: And an even bigger thank-you to the ARRL for their great email file.
: If you want to see what's in this goldmine of info send an email to:
: [e-mail]

Thanks, Jeff. It sometimes gets discouraging to work a 70-hour week (paid
only for 37.5 of them) and then get here in the morning and see some of the
usenet participants trash us for our imperfections. (OF COURSE we have a few,
just like anyone else.) I don't mind constructive criticism, but it is
really more useful and constructive if it is not made into a personal
attack. It should come as no surprise that we appreciate an occasional
compliment, too. :-)

Sadly, I often see that we are being criticized for not doing something
we already do, or for doing something that we don't do; I have done my
best to find time in an already busy day to offer the occasional
clarifying information. Even more sadly, I have seen us criticized
*appropriately* on this forum *instead* of having the "constructive
criticism" directed to the appropriate staff or to your Division
Director who *can* change League policy.

I encourage all rec.radio.amateur participants to make your views known to
your Division Director, by mail, email, telephone or in person at his or her
many appearances at conventions, hamfests and club meetings! The
[e-mail] files have a list of HQ and ARRL officers email addresses,
postal mail addresses, telephone numbers, etc. See also page 8 of QST. This
forum has produced many excellent ideas and a wide spectrum of amateur
community opinion. If it worth saying it is worth saying to the ARRL
Division Directors, too. All of the Directors I have met feel that they
would like to hear more from the silent majority, so their policy decisions
can be made based on a wider range of opinion.

The ARRL does a lot of important things for Amateur Radio and offers a
susbstantial array of membership benefits. (Ask [e-mail] to send the
services.txt file!) You may agree, or disagree, with some of the policy
decisions made over the years, but the bottom-line question is "Is ARRL
doing *anything* I consider important to Amateur Radio?" If so, support it,
and use that support as a platform to change those things you believe we
should do differently.

Anyhow, I don't want to blather on endlessly. Now that I have a bit more
time (after preparing for my 6-hour EMC Seminar), folks should see a bit
more of me here. :-)

73 from ARRL HQ, Ed




: and only write
: INDEX
: QUIT
: and within a few minutes you'll receive the index of all their
: available files.

: Jeff NH6IL

--
Ed Hare, KA1CV, ARRL Laboratory, 225 Main, Newington, CT 06111
203-666-1541 [e-mail]

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Date: 31 Aug 1994 14:41:55 GMT
From: ihnp4.ucsd.edu!swrinde!cs.utexas.edu!convex!convex!iphase.com![e-mail]
To: [e-mail]

References <33l3kp$[e-mail]>, <[e-mail]>, <[e-mail]>
Subject : Re: Is the moon reflective of radio waves?

 I think you will find the noise generated by the reflection of energy
 from the sun far greater than any energy reflected from any radio
 sources from deep space.  The temperature of the Moon  is in the area
 of 200 to 225 Kelvin.  Temperatures of the strongest radio sources,
 other than the sun, are much less than that.  I do not have a listing
 here at work to give hard numbers for other radio sources.

 If you are interested in doing some of you on radio astronomy it is
 well with in an amateurs means to detect the stronger of the radio
 sources, the Moon and of course the Sun.

 Hope this is helpful.

 Wes Atchison
 WA5TKU

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Date: 31 AUG 94 10:28:12
From: pa.dec.com!nntpd.lkg.dec.com!mrnews.mro.dec.com!est.enet.dec.com![e-mail]
To: [e-mail]

References <33o1t7$[e-mail]>, <33t35m$[e-mail]>, <33v5bn$[e-mail]>d.lk
Subject : Re: Ragchewing conversational protocol


In article <33v5bn$[e-mail]>, [e-mail] (Kevin Barnes) writes...
>They feel that using a repeater for a "round table" or an
>extended QSO defeats the original intent of having a repeater in the first
>place, which was to extend the range of HTs and mobiles.

What about extended or round-table *mobile* QSOs? Very commonly done here in
the Northeast as a way to kill time during the commute.
-Tom R.   N1OOQ   [e-mail]

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Date: 31 Aug 1994 09:31:27 -0700
From: ihnp4.ucsd.edu!usc!elroy.jpl.nasa.gov!lll-winken.llnl.gov!enews.sgi.com!wdl1!ltis.loral.com!galileo![e-mail]
To: [e-mail]

References <[e-mail]>, <33ip31$[e-mail]>, <33t7l9$[e-mail]>h
Subject : Re: Auto/Phone Patch

[e-mail] (Jeff Racz) writes:

>You still can't
>can't call your office for messages, talk to your secretary or your boss,
>or a client because that's how you earn your living.  Of course, there are

What about calling the office to tell them you'll be late because your
car broke down on the freeway.  And you've already used the patch to
call the automobile club for a tow.

--

  [e-mail]

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End of Info-Hams Digest V94 #982
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