On this day, 48 years ago


Here men from the planet Earth 
First set foot upon the Moon
July 1969, A.D.
We came in peace for all mankind

Neil  A. Armstrong     Michael Collins     Edwin E. Aldrin Jr.
Astronaut                Astronaut                  Astronaut

Richard M. Nixon
President, United States of America

To read about the communications systems that the Lunar Module employed, here are two good links from the NASA Archives: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19720023255.pdf and https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090015392.pdf

The S-band transceiver was the primary transceiver used for TV, telemetry, biomedical data, and voice communications from the Lunar surface. It had an output power of  750 mW (QRPp!).  That signal then went to the S-band power amplifier, which boosted the signal to an outstanding "QRO" signal of 18.6 Watts.

72 de Larry W2LJ
QRP - When you care to send the very least

Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

On this day, 48 years ago


Here men from the planet Earth 
First set foot upon the Moon
July 1969, A.D.
We came in peace for all mankind

Neil  A. Armstrong     Michael Collins     Edwin E. Aldrin Jr.
Astronaut                Astronaut                  Astronaut

Richard M. Nixon
President, United States of America

To read about the communications systems that the Lunar Module employed, here are two good links from the NASA Archives: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19720023255.pdf and https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090015392.pdf

The S-band transceiver was the primary transceiver used for TV, telemetry, biomedical data, and voice communications from the Lunar surface. It had an output power of  750 mW (QRPp!).  That signal then went to the S-band power amplifier, which boosted the signal to an outstanding "QRO" signal of 18.6 Watts.

72 de Larry W2LJ
QRP - When you care to send the very least

Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

RepeaterBook – A FREE Online Repeater Directory – ETH078

ETH078 - RepeaterBook

In this episode of the Everything Ham Radio Podcast, we talk with Garrett Dow, KD6KPC, the creator of RepeaterBook.com. RepeaterBook is a free online repeater directory that covers all of the US and Canada as well as several other countries around the world.

You can use RepeaterBook directly from its website, or through its app. You can find the app on IOS, Android and Kindle. RepeaterBook has done a great job on getting and maintaining the information of about 35,000 repeaters thank in a large part to about 95 admins that maintain the records in their assigned areas and from the ham community at large.

Make sure you give the interview a listen and check out the show notes.


Curtis Mohr, K5CLM, is the author/owner of Everything Ham Radio Blog and Youtube channel. Contact him at [email protected].

QRP from the Seashore

Judy and I drove over to the beach today. It was glorious! We got lots of sun, had a fantastic walk, and I operated in the CWT sprint for a few minutes. The highlight of the operating was making a beach-to-beach QRP QSO with K4KRW in North Carolina.

We drove over to Rye Harbor in the morning and had a picnic lunch as soon as we arrived. Then we walked a couple of miles along the beach. After this Judy lay down on the shore to soak up some sun. I rode my bike about a half mile inland to play radio for a while. I’d brought a kite, but there wasn’t quite enough wind to lift an antenna… so I went in search of some trees. I found a wildlife area not too far from the road. A narrow path leads through the woods to a platform overlooking a beautiful inland marsh.

Except for the heat (high 80s in the shade), the spot was perfect. I had a 30 foot tree nearby and set up the wire as a sloper. The little deck even had a chair and a bench to operate on. I ran the KX3 on 20 meters and right away worked IK0YVV in Italy. Marco gave me a 559. Then I worked Gilly, WA5SNL in Texas. He also gave me a 559.

After signing I tuned up to the QRP frequency. K4KRW, Richard, was calling CQ. To my delight, he was operating from a beach in North Carolina with a KX3 and an end-fed wire. But… his wire was lifted by a kite! After arriving home, I found an email from Richard with a photo of his operating position.

We had a great QSO and exchanged 559 signal reports. What a thrill to work another KX3 operator on the beach!

Now the CWT sprint had started and I joined in. I only operated for 10 minutes, because by now my shirt was drenched and I’d had enough of this heat. Here’s my log. I’ve changed it to reflect the other station’s QTH instead of the CWOPS member number used in the real exchange:

19 Jul-17 1840 14.028 IK0YVV CW 559 579 Italy Marco
19 Jul-17 1848 14.029 WA5SNL CW 559 579 TX Gilly
19 Jul-17 1854 14.060 K4KRW CW 559 559 NC Richard
19 Jul-17 1902 14.036 AA3B CW 599 599 PA Bud
19 Jul-17 1903 14.035 K9CT CW 599 599 IL Craig
19 Jul-17 1903 14.034 AD8J CW 599 599 NC John
19 Jul-17 1905 14.032 K4RO CW 599 599 TN Kirk
19 Jul-17 1907 14.026 N4ZZ CW 599 599 TN Doc
19 Jul-17 1908 14.036 N2SR CW 599 599 NJ Tom
19 Jul-17 1909 14.034 NR4M CW 599 599 VA Steve

With this I packed up and headed back to Rye Harbor. This is really a beautiful spot. Wild rugosa roses form a hedge along the road and fill the air with fragrance. Next to the harbor is a little state park with facilities. It’s a perfect place to spend the day.


Jim Cluett, W1PID, is a regular contributor to AmateurRadio.com and writes from New Hampshire, USA. Contact him at [email protected].

Chameleon CHA P Loop review

The Chameleon CHA P Loop antenna
I had a chance to once again use my new Chameleon CHA P loop antenna  and it's now time to give this antenna my humble review. To begin with I shopped around for a loop antenna and looked at the following brands. The Alexloop walkham  loop, the Caras HF 315 loop, Alpha loop antennas and finally Chameleons CHA P loop antenna. Most of these antenna had good reviews for the most part but I chose the Chameleon CHA P loop for it's rugged construction and slightly better reviews. The loop comes with very easy to follow instructions that contain in-depth details about the antenna. I ordered it from DX Engineering and the delivery time was GREAT along with their customer service. The loop does not take long to assembly and wth practice I have it up and running in under 10 minutes. Below is a list of the positives I found with antenna:

  1. It has a very small foot print when setup and is very portable which makes it easy for traveling on foot or bike. 
  2. In very little time you can get very proficient as setting up the antenna. 
  3. The Loop (LMR-400) section and PL-259 connectors are very good quality and also they are fitted with heat shrink to add a nice water tight fit. 
  4. The tuning box is sealed and weather proof just for those days when Murphy decides to bring some rain on your portable operations. 
    The tuning box 
  5. The 6:1 reduction gear makes tuning accurate and finding the peak noise level very fast. On the tuning box I added a 40-10 meter decal to remind me of tuning direction. Also I added the DX Engineering sticker as I am blown away with their customer service. 
  6. I was able to successfully tune the loop to at least 1.3:1 on all bands wether is was 10m or 40 meters. 
  7. Once the antenna was tuned to the lowest SWR and you move away from the antenna the SWR does not change. In the past with other loop antennas I have used the tuning know was on the top of the tuning box. Your hand being in the loop would affect the SWR and once your hand was removed the SWR would change and this made tuning frustrating. Other loops did not have the 6:1 gear reduction and finding the sweet spot and lowest SWR was a challenge. The slightest touch of the tuning knob threw the SWR off and often you would have to start over again. 
  8. On the base of the handle is a 1/4-20 female thread that makes putting this antenna on a tripod a breeze. Other loops I have used do not have this and I had to make up a homemade mount. 
  9. RG-58 with integrated RFI choke feed-line decouples the Faraday coupling loop from the radio which is essential to prevent SWR fluctuation while rotating the antenna or moving the coax cable around.
  10. If you have an HOA situation and getting on the air is a challenge this antenna could be the answer for you. 
    Quality PL-259 on Loop
Some of the drawback I found with the antenna are:
  1. The coax that runs from the antenna to the rig is only 12 feet and longer would had been better but that is my humble opinion. In all fairness the other portable loops I have own I had the same issue. Now Chameleon does offer coax with the RF choke in a 50 foot length for 65.00. 
  2. The telescoping mast seems a bit delicate and could if your not careful become damaged making the antenna unless until it's replaced. 
  3. I noticed right away the PL-259 connectors on the feed line are the crimp type and look of low grade quality. In my opinion this makes for a very weak point in the antennas construction. The loop section has quality grade PL-259 but this was skipped with the feed line. 
    Crimped PL-259 
  4. The carry bag it comes with is defective right off the self and admitted so by Chameleon. I'm not going to go into detail about that here but you can read my post about it HERE.
In conclusion I am very happy with the antenna and it's built quality, easy deployment and reduction gear tuning. It is pricey but in all fairness all the loops of similar characteristics are in around the same price. 

Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].

Chameleon CHA P Loop review

The Chameleon CHA P Loop antenna
I had a chance to once again use my new Chameleon CHA P loop antenna  and it's now time to give this antenna my humble review. To begin with I shopped around for a loop antenna and looked at the following brands. The Alexloop walkham  loop, the Caras HF 315 loop, Alpha loop antennas and finally Chameleons CHA P loop antenna. Most of these antenna had good reviews for the most part but I chose the Chameleon CHA P loop for it's rugged construction and slightly better reviews. The loop comes with very easy to follow instructions that contain in-depth details about the antenna. I ordered it from DX Engineering and the delivery time was GREAT along with their customer service. The loop does not take long to assembly and wth practice I have it up and running in under 10 minutes. Below is a list of the positives I found with antenna:

  1. It has a very small foot print when setup and is very portable which makes it easy for traveling on foot or bike. 
  2. In very little time you can get very proficient as setting up the antenna. 
  3. The Loop (LMR-400) section and PL-259 connectors are very good quality and also they are fitted with heat shrink to add a nice water tight fit. 
  4. The tuning box is sealed and weather proof just for those days when Murphy decides to bring some rain on your portable operations. 
    The tuning box 
  5. The 6:1 reduction gear makes tuning accurate and finding the peak noise level very fast. On the tuning box I added a 40-10 meter decal to remind me of tuning direction. Also I added the DX Engineering sticker as I am blown away with their customer service. 
  6. I was able to successfully tune the loop to at least 1.3:1 on all bands wether is was 10m or 40 meters. 
  7. Once the antenna was tuned to the lowest SWR and you move away from the antenna the SWR does not change. In the past with other loop antennas I have used the tuning know was on the top of the tuning box. Your hand being in the loop would affect the SWR and once your hand was removed the SWR would change and this made tuning frustrating. Other loops did not have the 6:1 gear reduction and finding the sweet spot and lowest SWR was a challenge. The slightest touch of the tuning knob threw the SWR off and often you would have to start over again. 
  8. On the base of the handle is a 1/4-20 female thread that makes putting this antenna on a tripod a breeze. Other loops I have used do not have this and I had to make up a homemade mount. 
  9. RG-58 with integrated RFI choke feed-line decouples the Faraday coupling loop from the radio which is essential to prevent SWR fluctuation while rotating the antenna or moving the coax cable around.
  10. If you have an HOA situation and getting on the air is a challenge this antenna could be the answer for you. 
    Quality PL-259 on Loop
Some of the drawback I found with the antenna are:
  1. The coax that runs from the antenna to the rig is only 12 feet and longer would had been better but that is my humble opinion. In all fairness the other portable loops I have own I had the same issue. Now Chameleon does offer coax with the RF choke in a 50 foot length for 65.00. 
  2. The telescoping mast seems a bit delicate and could if your not careful become damaged making the antenna unless until it's replaced. 
  3. I noticed right away the PL-259 connectors on the feed line are the crimp type and look of low grade quality. In my opinion this makes for a very weak point in the antennas construction. The loop section has quality grade PL-259 but this was skipped with the feed line. 
    Crimped PL-259 
  4. The carry bag it comes with is defective right off the self and admitted so by Chameleon. I'm not going to go into detail about that here but you can read my post about it HERE.
In conclusion I am very happy with the antenna and it's built quality, easy deployment and reduction gear tuning. It is pricey but in all fairness all the loops of similar characteristics are in around the same price. 

Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].

Just noticed something

The graphic for Windows 10 Mail:


Do you see it?

72 de Larry W2LJ
QRP - When you care to send the very least!

Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

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