Send your NAQP scores to me. geoiii@bga.com
I will post the first list this afternoon.
--
George Fremin III
Austin, Texas C.K.U.
WB5VZL
512/416-0140
geoiii@bga.com
>From Marijan Miletic <s56a@ljutcp.hamradio.si> Mon Aug 21 13:04:08 1995
From: Marijan Miletic <s56a@ljutcp.hamradio.si> (Marijan Miletic)
Subject: Silent Beverages
Message-ID: <74630@ljutcp.hamradio.si>
Frank, W3LPL in his excellent posting on phased Beverages shows convincingly
that we should use 80m for 3.5-4 MHz band. I only wish he used meters for his
recommended Beverage lenghts as I always assumed they should be multiple of
wavelength. However, 580 feet comes to about 175 meters which is littlebit
longer than full wavelength. What generates "cone of silence" for this exact
antenna length? I remember visiting famous UK reception site long time ago
and they were using very long Beverages as they needed to hear "what the BY's
had to say to UA's" in their own cold war words! The lowest HF BC band was
around 5 MHz but when you think of it, there was not much QRM from the back!
73 de Mario, S56A, N1YU.
>From jrouse@dc.infi.net (John Rouse) Mon Aug 21 14:30:36 1995
From: jrouse@dc.infi.net (John Rouse) (John Rouse)
Subject: European jaunt - September
Message-ID: <199508211330.JAA14410@larry.infi.net>
Hello all: Will be in Europe 3-15 Sept. and would very much enjoy meeting
any DXers, contesters who might in the cities in which I will be stopping....
I'll be in (DL) Frankfurt, Bamberg, then to (HB), Forcheim, Wannbach
and Muggendorf...(Back to DL) Kulmbach, Bayreuth. The on to (OK),
Plze and Prague. Then back to Frankfurt.
Although primarily a business trip, I plan to have a good amount of time to
indulge my real interests, hi....
Please drop me e-mail if you might be available for a chat. I'll then send
along the dates and hotels for these assorted stops.
Many thanks.....
73, John KA3DBN/VP2EBN
John L. Rouse Packet: ka3dbn@ka3rfe.md.usa.na
Capital-Gazette Communications FAX: 301-464-7027
jrouse@dc.infi.net COMPUSERVE: 71574,661
jrouse@capaccess.org PHONE: 301-262-3700, 410-268-5000
>From Lau, Zack, KH6CP" <zlau@arrl.org Mon Aug 21 14:33:00 1995
From: Lau, Zack, KH6CP" <zlau@arrl.org (Lau, Zack, KH6CP)
Subject: Re-New Radios (S-Meters)
Message-ID: <30388C1A@arrl.org>
>---------------------------------------------------------------------------
---
> The thing I (and Heather) would most like to see in a new (Contest)
>radio would be a precision signal strength meter. If they can have
>freqency readout to 10 hz or less, why can't they make an S-meter (or
>microvolt meter or whatever) that really means something?
Frequency happens to be one of the easiest things to measure.
The ARRL lab has quite an investment in power measuring gear--the
stuff isn't cheap. Such a meter would be great--you could replace
all those expensive Bird slugs with a receiver and a bunch of calibrated
attenuators.
There a bunch of variables involved. Usually, you use a log amplifier,
which is highly temperature sensitive unless properly compensated.
Putting all your circuitry in a temperature controlled oven would help
a great deal, if you didn't mind the warmup time. There used to be a
problem of getting a flat frequency response out of the filters, but this
can be fixed by using lookup tables and having the computer make
the necessary adjustments.... Of course, once you have come this
far, you might as well have the equipment test itself... I think the
amateur
market is too cost competitive to pay for what it costs...
Maybe in another 10 years computer software/hardware technology
will be developed to the point where the computer can calculate how
the circuits will perform based on previous/present enviromental
conditions....allowing the real time calculation of correction factors....
Its certainly not here now...
The readout isn't a problem, computers can be programmed to display
any unit you want.
Zack Lau KH6CP/1
zlau@arrl.org
>From Moore, Frank (Hdw Eng)" <fhmoore@po7.pcmail.ingr.com Mon Aug 21 14:48:00
>1995
From: Moore, Frank (Hdw Eng)" <fhmoore@po7.pcmail.ingr.com (Moore, Frank (Hdw
Eng))
Subject: KE4GY NAQP SSB
Message-ID: <30388EDC@hubsmp2.pcmail.ingr.com>
Call: KE4GY (+KC4ZV)
Name: Sunshine
State: AL
Breakdown
Band QSO Mult
160 20 12
80 83 32
40 225 49
20 153 45
15 18 8
10 3 2
----- -----
502 148
I think that this is my favorite contest even if the conditions aren't the
greatest. Sorry for the confusion about the name. We weren't trying to make
a statement about AL weather although that was the most obvious
interpretation (I did think about using HOT a ways through the contest). The
name was my dog's. We decided to use the contest to remember her since she
died on Friday. Rest in peace Sunshine.
Frank, KE4GY
fhmoore@ingr.com
>From H. Ward Silver" <hwardsil@seattleu.edu Mon Aug 21 15:20:03 1995
From: H. Ward Silver" <hwardsil@seattleu.edu (H. Ward Silver)
Subject: New Radios
Message-ID: <Pine.3.07.9508210702.D12561-9100000@bach.seattleu.edu>
Regarding general coverage tradeoffs...keeping an external bandpass filter
in the line (such as the DuneStar or ICE units) would certainly help keep
strong out-of-band signals from clobbering the front end. As these can be
controlled by the radio band-output information, it would be automatic. A
bit of a reverse solution (add gc coverage, then take it back out), but
workable.
73, Ward N0AX
>From jholly@hposl62.cup.hp.com (Jim Hollenback) Mon Aug 21 15:48:52 1995
From: jholly@hposl62.cup.hp.com (Jim Hollenback) (Jim Hollenback)
Subject: MultiTasking
References: <Pine.3.89.9508191704.B962-0100000@world.std.com>
Message-ID: <9508210748.ZM2225@hpwsmjh1.cup.hp.com>
On Aug 19, 5:25pm, howie cahn wrote:
> Subject: Re: MultiTasking
> This isn't really true! Modern O/S's (OS/2, NT, Win 95, Unix, Mac Sys 7,
> etc.) use virtual memory schemes where you can run programs much larger
> than the machine's physical RAM size and without a significant performance
> penalty. Of course, these operating systems won't run on a 640K machine,
> so, in that sense you're right.
>
Please help me understand this. With virtual memory I can run programs
much larger than the physical RAM, yet don't have a performance hit?
Pray tell, where is the code if it is not in swap space on the disk?
And if it is on disk, the access time is mesured in milliseconds, not
microseconds. Seem to me there will be a performance hit. Must be a reason
WinDog and the other operating system all want BIG physical memory.
73, Jim, WA6SDM
jholly@cup.hp.com
>From Bob McGwier <n4hy@ccr-p.ida.org> Mon Aug 21 15:52:58 1995
From: Bob McGwier <n4hy@ccr-p.ida.org> (Bob McGwier)
Subject: DSP power
Message-ID: <199508211452.KAA14180@growler.ccr-p.ida.org>
You can implement a true and "perfect" phase type SSB transceiver if the
IF is done in DSP. Image problems are greatly minimized. Filters can be
"perfect" in that they can be zero phase (no frequency dependent group delay)
and filters with extremely sharp shape factors can be implemented that you
simply could not afford in analog filter components. The dynamic range of
most modern DSP chips is more than adequate with extremely large word
sizes and huge accumulators and now with CD technology giving is very wide
dynamic range A/D and D/A chips, there is no reason not to try for this stuff.
You could implement modems for all HF modes so long as an intelligent host
interface is also provided. All of this will only take take a forward looking
manufacturer who believes it will make money.
Bob
Dr. Robert W. McGwier | n4hy@ccr-p.ida.org: ham radio, scouts,
Center for Communications Research | astronomy, golf (o yea, & math!)
Princeton, N.J. 08520 | Cmte member Troop 5700, ACM Pack 53,
(609)-279-6240(v) (609)-924-3061(f)| Council Commish GWC 362 Sanhican #2 WWW,
(609)-443-8963 (h) | I used to be a Buffalo . . . NE III-120
Explorer Post 995 advisor | proud parent in Brownie Troop 196
|