GE 4sqrp'ers, the September edition of the Ozark QRP Banner
is now online.

Julio, 

Here are some collected KMPW writings, collected from the internet. 

*(: Ham_QRP_CW-v-SSB_&_Miles-per-Watt_Records_130831.txt

Concerning "Miles-per-Watt" and comparing CW vs SSB

Many of the records cited are the One-Way type records, 

not the Ham Radio Two-way QSO type record. 

Records are presented to the public as is they are scientifically accurate, 

ignoring, usually, the tremendous gain afforded by Beam Antennas. 

If two distance records are claimed, same frequency, same power, same mode, 

1) using a Vertical 

2) using a 10-Element Yagi Beam, 

then those are not comparable records. 

These are not talking about the same kind of Distance Record.

Ham Radio Distance Records do not take into consideration 

the dB Gain on Transmit / Receive Antenna Systems. 

NASA deep space missions use very Hi-Gain Antenna systems. 

NASA uses antenna systems for Transmit and Receive at NASA 

which have a total gain of 100,000,000 (80 db referenced to a dipole). 

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 

Consider the following quoted published reports of ONE-WAY records:

*** One-Way with Hi-Gain antennas 

According to Rich Arland, K7YHA (now K7SZ), in World Radio magazine (Feb. 1990, year 19, issue 89, pp. 46-47) the long-distance low power record is held by KL7YU and W7BVV using one micro-watt over a distance of 1,650 mile 10-meter path between Alaska and Oregon in 1970.

This is the equivalent of 1.6 billion miles per watt.

*** One-Way with Hi-Gain antennas 

Another fact to consider: NASA's deep space missions typically achieve mile-per-watt ratings of more than 500 million miles. One example was the 8-watt signal from Pioneer 10*. At a power level equal to that of a night light (or is that Knightlite?) the craft's signal traveled 6.8 billion miles (11 billion km) to earth for a rating of 850 million miles per watt, or about half of the KL7YU/W7BVV record.

The Hi-Gain Antennas used for Transmit and Receive at NASA 

may have a total gain of 100,000,000 (80 db referenced to a dipole). 

Launched March 2, 1972 from Cape Kennedy for a two-year mission to Jupiter. The probe is now more than twice the distance from the sun as Pluto, traveling at 28,000 mph in the general direction of the first magnitude star Aldebaran.

*** One-Way Beacon 

January 2, 2005 - New London, NC - Bill Tippett, W4ZV, of New London, NC 

correctly copied code word OMAHA (on CW) from the N2XE beacon transmitting 

with a peak carrier power of .0000406 watts at 3.5455 MHz 

on the 80 meter Amateur Radio band. 

Bill confirmed reception of the beacon at 2328Z, January 2, 2005. 

The precise distance between the two stations is 546.8 miles, 

establishing Bill's record reception distance at 13,467,980 miles per watt. 

Tippett used a Ten Tec Orion Transceiver with a 1000 foot Beverage antenna 

(named after Dr. Harold Beverage who invented it in the 1920s).

The N2XE beacon transmits from an Elecraft K1 (heavily attenuated) 

using an 80 meter off-center fed dipole, 45 feet AGL (above ground level). 

The beacon peak carrier output was measured using an Agilent 8563EC 

Spectrum Analyzer at 40.6 uW (40 millionths of a watt). The beacon 

transmits a unique code word each evening. Receiving stations are 

required to correctly copy the code word in their report. The word 

is published the following morning.

The N2XE Beacon Project was started in December, 2004 by (NAQCC member) 

Paul Stroud, AA4XX, Raleigh, NC and John Ceccherelli, N2XE, Wappingers Falls, 

NY with the goal of having a little fun 

and to go where no diminutive signal has gone before. 

Beacon times and frequencies are posted daily on the QRP-L reflector 

www.kkn.net/archives/html/QRP-L. Tests continued on 160, 80 and 40 meters 

through the end of February 2005.

***************************************************************************

SOUTHGATE Amateur Radio News

***************************************************************************

http://www.southgatearc.org/news/october2005/world_qrp_records.htm

World QRP records

Hi all,

I've done a quick search for world QRP records and I've found the following. Can anyone say if these records have been broken?

The main reason I ask is that the SP5ANU 500uw beacon on 3.588 MHz has received two independent 549 (peak) reports which would signal that at least the 3.5mhz record could be soon broken.

Records:

3.5mhz 27uw N2XE-

http://mysite.verizon.net/n2xe/id2.html

1uw record 28mhz 

According to Rich Arland, K7YHA (now K7SZ), in World Radio magazine (Feb. 1990, year 19, issue 89, pp. 46-47) the long-distance low power record is held by KL7YU and W7BVV using one micro-watt over a distance of 1,650 mile 10-meter path between Alaska and Oregon in 1970. http://www.arm-tek.net/~yoel/qrpworks.html

While the "absolute" world record seems to be 720nw on 28mhz

http://www.e-discounter.net/qrparci/messages/6063.html

A few recordings can be heard on

http://users.vnet.net/btippett/topband_sounds.htm

73's

Richard G6GGE/SO5GB

Email: translations <at> qdnet.pl

***************************************************************************

SLASH-DOT

***************************************************************************

http://science.slashdot.org

/story/05/01/05/2246205/ham-operator-sets-new-miles-per-watt-world-record

January 05, 2005

Ham Operator Sets New Miles-Per-Watt World Record

Posted by timothy on Wednesday January 05, 2005 @07:00PM 

from the bend-it-like-an-ionospheric-layer dept.

DoctorPepper writes

"A ham radio operator in New London, North Carolina correctly copied an 80 meter CW beacon in Wappingers Falls, New York, a distance of 546.8 miles. The kicker is, the beacon station, an Elecraft K1, was putting out 40.6 uW (40.6 millionths of a Watt) -- which works out to 13,467,980 miles per watt!"

***************************************************************************

E-DISCOUNTER.NET/QRPARCI/MESSAGES

***************************************************************************

http://www.e-discounter.net/qrparci/messages/6047.html

New Miles Per Watt Record

[ Follow Ups | Post Followup | Return to QRP Forum ]

Posted by:  John Pawlicki, K8AG

Posted On:  01/06/05

Subject:  New Miles Per Watt Record

Message Posted: 

Slashdot posted an article about a new miles per watt record. Too bad they are calling Ham Radio "Horribly Outmoded". Then again, another distro of Linux is just what everybody needs.

Link:  Slashdot Science Site New Miles Per Watt

Follow Ups:

Re: New Miles Per Watt Record   Mike Czuhajewski   Posted on 01/07/05 (1)

Re: New Miles Per Watt Record   WA6YPE   Posted on 02/11/05 (0)

Re: New Miles Per Watt Record   John W2AGN   

***************************************************************************

http://www.e-discounter.net/qrparci/messages/6063.html

Re: New Miles Per Watt Record

[ Follow Ups | Post Followup | Return to QRP Forum ]

Posted by:  Mike Czuhajewski

Posted On:  01/07/05

Subject:  Re: New Miles Per Watt Record

Message Posted: 

    In Reply to: New Miles Per Watt Record posted by John Pawlicki, K8AG on 01/06/05

With all due respect, since it is quite an achievement in any case, the 13+ million MPW figure is not a world record, or at least not the overall record. It may certainly be a record for the band it was on, though.

Back in the late 60s someone set a record of 1.6 billion (with a B) miles per watt, and that fact figured prominently for some time in the advertising of the company that made the antenna used on the QRP end :-)

More recently, in 1992 [or 1990?] K7IRK in Texas and WB8ELK in NH set a record of 2.133 billion miles per watt on 10 meters. K7IRK was running a Fireball transmitter (described earlier in 73 magazine) and had it attenuated down to 0.72 microwatts, or 720 nanowatts. The path was 1536 miles. (I seem to recall that either this achievement and/or the Fireball transmitter was the cover story of 73 magazine at one time, but I can't verify that. I know I used to have a copy of it but was unable to find it today. My radio room is a disaster, but it will surface eventually.)

In case anyone has some ancient QRP Quarterlys around the house, you can read about it in the April 1993 issue. We reprinted a column which discussed it in the March 1992 issue of Radio Fun magazine (published by W2NSD/1, probably long since shut down). I think there may be a typo in some of the dates in the article, which I'll try to track down.

BTW, the article also says that there was a third person involved at the time. WA6YPE in California was also participating and copied the K7IRK signal down to 1.56 microwatts, for 840 million miles per watt.

So, recent reception of the N2XE beacon was very possibly the record for the band, regrettably not an overall world record, but dang, 13 million is still 13 million!

73 and queue our pea DE WA8MCQ

***************************************************************************

http://www.e-discounter.net/qrparci/messages/6224.html

Follow Ups:

Re: New Miles Per Watt Record   WA6YPE   Posted on 02/11/05 (0)

Re: New Miles Per Watt Record

[ Follow Ups | Post Followup | Return to QRP Forum ]

Posted by:  WA6YPE

Posted On:  02/11/05

Subject:  Re: New Miles Per Watt Record

Message Posted: 

    In Reply to: Re: New Miles Per Watt Record posted by Mike Czuhajewski on 01/07/05

Yep you got it right, from Glendora, CA I copied Bob K7IRK in Palestine, TX at 1.56 microwatts and was listening just a few minutes later when WB8ELK in NH copied Bob at .72 microwatts out. My antenna was a mini-quad at 12 ft. and receiver was a Yaesu FT-767.

***************************************************************************

http://www.e-discounter.net/qrparci/messages/6048.html

Re: New Miles Per Watt Record

[ Follow Ups | Post Followup | Return to QRP Forum ]

Posted by:  John W2AGN

Posted On:  01/06/05

Subject:  Re: New Miles Per Watt Record

Message Posted: 

    In Reply to: New Miles Per Watt Record posted by John Pawlicki, K8AG on 01/06/05

What I can't believe is the whiners actually posting complaints that they can't hear it, so it's unfair. The same crybabies that are always whining about not being able to compete with the "big beams," etc.

Next thing is one of the QRP-Lawyers will file with the ACLU that his clients "self-esteem" was damaged and he wants to collect.

*************************************************

One reason the NAQCC is a QRP CW club

is because QRP and CW go together so well.

CW takes up about 100Hz of spectrum

whereas SSB uses about 2000Hz.

The average power density for CW,

given the above values,

is 1 Watt/Hz and for SSB .05 Watts/Hz.

So if we compare the two modes

we could say that gain in using CW over SSB

is Gain(dB)=10*log(1/.05)

which is equal to 13dB

What does this mean?

It means that

5 Watts of CW is as efficient as 100 Watts of SSB.

Just a little food for thought.

end quote.

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 

From KK4LPG, Glen Ellis, QRZ.com. 

My QRP best contact was my first QSO after 50 years. 

On 2013, March 17, 1700 EST, on 20M 14.041, between WY4J and KK4LPG, 862 miles.

KK4LPG antenna was an end-fed telephone cable strung through my attic. 

WY4J antenna was a 3-Element beam. 

My 1W and SWR 8:1 produces an "Effective Power Output" of 0.2 Watts. 

So, my little .2 Watt for 862 miles is equivalent to 4310 miles per watt !

My little QRP contact is near the bottom of the bucket.

But what a surprising bucket to be in !

Since that time, March 2013, I have changed transmitters to the HW8, 

and changed antennas to a 150' LongWire up at 15' .

The original installation is no longer available.   

When the QRP SWR/Power Meter arrives, I'll be able to 

1) adjust the HW8 to exactly 1 W ouput , 

2) match SWR exactly, 

3) count the miles per QRZ/Google,    down to the nearest 100 Foot mark ! 

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 

AK4VL, Julio Jimenez, 

You took the initiative.  Thanks.    

Have a Ham Club meeting in a week, and have something to show !

With the Long-Wire of 150' at 15', 

the power pulled from the HW8  

should be in the 1 - 2 W range on 20M, now.  

Contacts are generally in the 750 to 1500 mile range on 20M. 

Probably like everybody else on 20M. 

Check my log at QRZ.com for public record.  

I Only try for the S2 - S3 signals ... that is where the 'fun' is ! 

I get too tied up in measuring everything in the world.

Worked good in colleg, but slows down real life.