Keep The Faith, Having Fun With No Sunspots

I was motivated to write this today after looking at the solar flux number which sat at 67.  I don't know if I've ever seen the flux this low. I think I've seen 68 a lot, but not 67. Truly, things must be really bad.

As it would happen today, with the flux at 67,  I did my 258th SOTA activation on a summit near Santa Fe, NM that has no name, but goes by it's elevation, 8409. There are beautiful views in every direction, from the summit of 8409, and I enjoyed them immensely. With me, on my trek up the mountain, was my KX2, a 21ft. collapsible pole to support a 29 ft. piece of wire through an 81 to 1 transformer. I feed the antenna about a foot above the ground and run the wire up the pole in an inverted L configuration. The pole was propped up among the branches of a pine tree and I tied off the antenna to a close-by pine branch. I had the power set to 5 watts and tuned the wire with the KX2. I  operated CW using the Elecraft plug-in paddle and I logged with a golf pencil on a, write in the rain, index card. The temperature was a crisp 39 degrees, but the sun was shining and not wisp of a breeze. It was a good day to be on the mountain top.

I was on the air from 1642z - 1722z. I operated on 40, 30m, 20m and 17m and completed 40 QSO's in the 40 minutes that I was on the air from 8409. Also, with the flux at 67, I managed to work two EU stations, ON and EA. I heard a 9A calling me but we couldn't complete the contact. So, 40 QSO's, coast to coast in the US and 2 DX QSO's from EU was my catch for the day. Not bad for a short QRP/portable outing. Keep in mind that's with the flux at 67. I'm glad I didn't look at the numbers before I left or I might have been a bit discouraged and perhaps wouldn't have gone out at all. I would have missed the beautiful views, the warming sunshine and a QSO a minute QRP operation. I wouldn't have worked EU with 5 watts and a wire. I would have had to put off my 258th SOTA activation for another day.

The moral of this story is simple, don't look at the numbers. In fact I would recommend that you ignore them. There is plenty of fun to be had keying up your radio even when conditions, or at least the numbers, are this bad.

Keep the Faith. Go call CQ. I was glad I did.

Mike Crownover, AD5A, is a regular contributor to AmateurRadio.com and writes from Texas, USA. Contact him at [email protected].

Condo Hamming, The NRR and Ron’s Logs

courtesy: K4VRC Group
An interesting thread has developed recently on the e-ham.net reflector concerning the enjoyment of your radio hobby from a condo / townhouse or similar sites subjected to the typical 'no outside antenna' rules.

Rick, KB2NAT, describes the learning curve in his 'How To Overcome Some Condo Issues' post.

Amateurs contemplating downsizing to a restricted development or those finding themselves in a similar situation to Rick will likely soon be subjected to more noise, less space, more neighbours and an abundance of rules. Hopefully the comments of Rick and others will be helpful if this is your situation.

For many restricted hams, Mag loops appear to be a popular choice and one of the comments points to a good deal of information on building one for yourself. The Villages Amateur Radio Club (K4VRC)  group's 'resources' link will provide some interesting ideas for restricted antenna builders. As well, they have put together an informational presentation, full of great antenna ideas for those contemplating ways to get on the air from antenna-restricted locations.

If you live in the USA, the 'Freedom to Display the American Flag Act of 2005' has been used by many antenna-restricted hams, to legally erect their own 'antenna flagpole'! It may be an easy route for a nice antenna system for you as well.


The 'Novice Rig Roundup' Starts Tomorrow!





Just a reminder that 9 days of CW operating fun begins tomorrow afternoon. After last year's most enjoyable event, the NRR is now one of my 'must do' operating activities. You can read all about it here.





Ron's Logs



courtesy: California State Parks
If you have any interest in tuning around the international shortwave bands or perhaps are wondering what can be heard there, the daily logs of several dedicated listeners can be found in the Groups.io World of Radio as well as in Yahoo's DXLD group. I particularly enjoy the information posted in 'Ron's Logs' and marvel at some of the DX that he hears each morning from his car!




Ron lives in the seaside city of Monterey (CA) and on most mornings he makes the short pre-dawn drive to Asilomar State Beach (CA), a spectacular location on the coast.




After stringing out his 100' wire antenna on the nearby fence posts, Ron proceeds to log and record some truly exotic stuff before heading home.

Early last Fall, before being aware of Ron's daily regime, I had visited his exact location and after watching the big sea lions playing in the surf, had drooled over the location's great DX potential, little knowing that Ron had likely packed his gear up a headed home just a few hours before my arrival! I'm sure you'll be inspired to tune around the SW broadcast bands after checking out theses Group's daily posts.

Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

Feeling gassy

Ionization is a beautiful thing


A reader asked me to video the pulsing of the OA2 voltage regulator tube in action. 

OA2 VR tube glowing beautifully in back corner



I turned the room lights down to capture the OA2 in its glowing gas glory and noticed a problem with the V15 6EA8 tube that creates the sidetone oscillation and Vox control. A patch inside was glowing a brilliant violet color when the CW switch was engaged. Glowing gas inside a gas filled tube is pretty but glowing gas inside a vacuum tube is a no-no.  I've noticed my sidetone volume (which is unadjustable) going a bit soft over the past week and now I understand why. The vacuum tube has developed a leak and has "air" inside.  That "air" is mostly nitrogen which ionizes with this brilliant violet color. 

Tbis 6EA8 should not be glowing violet

Lots of flatulent tubes


After I saw that I started looking and noticed I also have an 12AX7 beginning to go gassy as well so I ordered some new tubes from www.findatube.com

So let's keep the gases where they belong.

Solved a bit of a mystery tonight

I had a problem that I've just tracked down. Most boat anchor guys would probably already have known how to solve this but it a new discovery for me.

My audio was occasionally scratchy with a bit of popping.  Sometimes when working CW the other stations signal would jump around slightly in frequency, like 20Hz - 50Hz. 
I'd already re-seated most of the tubes, re-tightened screws, DeOxit'd switches, etc.  

Then I noticed that V1's tube shield was not bonded to the tube socket finger thingy (sorry don't know what it's called).  The other tube shields were soldered and I hadn't noticed that this tube shield was new and looking at the socket spring thing appears it had never been soldered.  After pulling that tube and its shield I scraped the paint from the shield where the socket spring presses onto it and cleaned the socket spring as well.  Apparently those tubes leak RF and the tube shields catch the stray signals and send them to ground.  Without proper bonding the tube is spraying RF around.

That turned out the be the problem, now all is good. Received signals are rock steady and the audio is very clean.  

Tube shield needed to be grounded to the socket spring


This problem had been periodic and was driving me a little nuts.  I'd read that grounding the tube shields was important but somehow I'd missed that this shield was not properly bonded to the finger thingy.

On the positive side, I am growing a tube collection by purchasing replacements that are not needed :)


That's all for now

So lower your atmospheric pressure and raise your B+ voltage

Richard AA4OO

Richard Carpenter, AA4OO, is a regular contributor to AmateurRadio.com and writes from North Carolina, USA. Contact him at [email protected].

uBITX professional case

Amateur Radio Kits India, owned by VU3SUA. Is now producing a commercial grade aluminum case in a variety of different colours for the uBITX.


The case comes predrilled, with the cut out of the panel for the frequency display, ready to house the uBITX PCB. This sure makes the uBITX look the part in the shack. Complete with all the missing fittings, speaker, knobs, USB, SO239, mic skt, etc (the full list of parts is on the website).

Shipping starts early March.

Link here for:

Universal Case DA Grey



Steve, G1KQH, is a regular contributor to AmateurRadio.com and writes from England. Contact him at [email protected].

Travel Footage: 3Y0Z Antarctic Bouvet Island DXpedition 2018 Expedition (by EY8MM)

Here is video footage of the journey to Antarctic Bouvet Island, made by the 3Y0Z amateur ham radio team. This footage caught a few moments on the deck of M/V Betanzos.

As you can see in the last moments of this footage, the weather conditions contributed to the decision to abort the DXpedition, as it was far too dangerous to continue this expedition.

As reported by ARRL:

“Our captain has decided that it is in the best interest of safety and expediency to proceed directly to Capetown, South Africa, rather than Punta Arenas, Chile. We are now heading north to avoid the possibility of encountering ice. Currently, there is no ice in sight or on radar. In due time, we will head easterly toward Capetown. Our entire team is safe. Most are resting in their bunks and in good spirits. We will keep the amateur radio community and our families informed, as we continue our journey.”

In a huge disappointment for the DX community and the members of the 3Y0Z Bouvet Island team, the DXpedition’s leaders announced at 2000 UTC today (February 3) that a decision had been made to abort the DXpedition and head back to Chile.

“During the last 72 hours, we continued to experience the high winds, low clouds, fog and rough seas that have prevented helicopter operations since our arrival at Bouvet,” said an announcement on the 3Y0Z Bouvet Island website. “No improvement was predicted in the weather forecast for the next 4 days. Then, last night, an issue developed in one of the ship’s engines. This morning, the captain of the vessel declared it unsafe to continue with our project and aborted the DXpedition. We are now on our long voyage back to Punta Arenas. As you might imagine, the team is deeply disappointed, but safe. There is already talk about rescheduling the DXpedition.”

Bouvet Island currently is the third most-wanted DXCC entity, behind Kosovo and North Korea. The 3Y0Z DXpedition, comprised of top operators with considerable DXpedition experience, has been in the planning stages for 2 years and had attracted contributions from clubs and individuals around the world.

A dependency of Norway, Bouvet is a subantarctic island in the South Atlantic. The last Bouvet activation was 3Y0E, during a scientific expedition over the winter of 2007-2008.

 

Video Author: Nodir Tursun Zade, EY8MM

This copy is used BY PERMISSION from EY8MM, given in writing on 23 February 2018


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Review – BTech AMP-25 series for Analog & DMR

by John ‘Miklor’
K3NXU

The  AMP-25  series  VHF / UHF Amplifiers

The recently announced BTech Digital and Analog amplifier series puts a whole new spin on mobile operation. It performs more like a mobile than it does a power amp. The D series are true TDMA Tier2 DMR amplifiers.

Note: This review was done using an Anytone D868UV on both DMR and analog.

In the Box

Included with the 40W Mobile Amp are:

–  Mounting Bracket
–  3′  Interface Control Cable (Kenwood K1 connectors)
–  3′  RF connect cable (SMA-M to SMA-F)
–  Microphone and Hanger
–  All necessary mounting hardware
–  User Guide

General Description
–  UHF or VHF Power Amplifier

–  2-6W  >  20-40W  Output

                         Modes of operation include:

             V25  U25            V25D   U25D
Analog (FM)
C4FM (Fusion)
P25  (Phase 1)
NXDN
IDAS
dPMR
MPT1327
 >  DMR Tier II (TDMA)
 >  P25  (Phase 2)
Analog (FM)
C4FM (Fusion)
P25  (Phase 1)
NXDN
IDAS
dPMR
MPT1327

A Different type of Mobile Amplifier

I found these to be much more than a typical power amplifier. Although they can function as a simple ‘In and Out’ power amp, this is about as close to a full mobile as you can get. Although the driving force was my DMR handheld sitting in my cup holder, the transmit audio was that of the included hand microphone and the receiver audio out was coming through the built in speaker driven by a four watt audio amplifier.

Transmit Power

I tested the power on two different models. The VHF V25 (non TDMA) and the U25D for UHF DMR.  The power was tested using the analog side of both into a calibrated Bird Termaline wattmeter. The maximum current drain from my 13.6V 30A power supply was just under 6A. This is low enough for the amp to be powered by the 10A accessory jack in your vehicle.

Enclosure

The basic frame measures 4.6″W x 1.3″H x 5.5″D (excluding the SO-239) and weighs in at 26oz.  I was curious to see the internal layout of the amp and to no surprise, there was a 5/8″ finned heat sink spanning the entire length and width of the case along with air vent along the back of the enclosure.

Operating Modes

These are single band amplifiers.
V25(D) = VHF 136-174MHz
U25(D) = UHF 400-480MHz.

Note: The V25D and U25D were designed to include DMR Tier II (TDMA) and P25 Phase 2 along with all other modes. Their operation varies slightly.

V25  /  U25
To operate VHF through the UHF (U25) amplifier, or UHF through the VHF (V25) amplifier, simply power off the amplifier. This will allow you to run straight through directly to the antenna without power amplification on that band.

V25D / U25D
These amplifiers will only operate within their specified VHF or UHF range. This is due to the circuit switching design of DMR Tier II and P25 Phase 2.

Hook Up

The simplest configuration is using the included RF cable to attach the radio to the amp. You could add a Spkr/Micr to the handheld, but you would still be bypassing some of the best features.

I use the two included cables. The 3′ RF cable to attach the radio to the amp, and the control cable. This allows me to use the full size hand microphone as well as connecting the four watt audio amp powering the speaker. The power included power cable is compatible with handhelds using the standard two pin Kenwood style connector, such as an MD380, D868, GD77, UV5R, F8HP, UV82, etc.

I use an Anytone D868 on DMR as well as analog with the hookup diagrammed below. Depending on your radios antenna jack, you may need to pickup an SMA-M to SMA-M adapter.

 

Convenience

All channel selection and volume adjustments are done using the handheld. No duplicate programming or code plugs are necessary. Whatever is in my handheld is what I operate in the mobile

Operating my handheld in the low power position, I still get 22W out on UHF and my handheld’s battery life remains excellent, but high power gives me a solid 39W.

Conclusion

I was glad to see someone finally develop what is a full featured mobile amplifier capable of  DMR as well as all other modes including C4FM and D-Star that is small enough to mount in the car, boat, and on top of your computer. This amplifier is Part 90 certified and definitely worth considering.

Available from Amazon:    V25     V25D     U25     U25D
and     

VHF /UHF
Digital / Analog
Mobile Power Amplifiers

 


Hans, PD0AC, is a regular contributor to AmateurRadio.com and writes from Almere, The Netherlands. Contact him at [email protected].

Weekly Propagation Summary – 2018 Feb 26 16:10 UTC

Weekly Propagation Summary (2018 Feb 26 16:10 UTC)

Here is this week’s space weather and geophysical report, issued 2018 Feb 26 0308 UTC.

Highlights of Solar and Geomagnetic Activity 19 – 25 February 2018

Solar activity was very low throughout the summary period. No active regions were observed on the visible disk. No Earth-directed CMEs were observed in available coronagraph imagery.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels from 19-26 Feb. A peak flux of 13,500 pfu was observed on 19/2030 UTC.

Geomagnetic field activity ranged from quiet to G1 (Minor) storm levels due to multiple negative coronal hole onsets. Quiet to G1 (Minor) storm levels on 19 Feb were associated with peak wind speeds of just about 550 km/s from a negative polarity CH HSS. The geomagnetic response declined along with solar wind speeds with quiet to unsettled conditions observed on 20 Feb and quiet levels on 21 Feb . A subsequent enhancement in solar wind speeds from another negative polarity CH HSS increased geomagnetic field activity to quiet to active levels on 22 Feb, and further to quiet to G1 (minor) storm levels on 23 Feb, which were also associated with peak wind speeds around 550 km/s. Activity dropped to quiet to unsettled on 24 Feb and completely quiet by 25 Feb as effects from the CH HSS waned.

Forecast of Solar and Geomagnetic Activity 26 February – 24 March 2018

Solar activity is expected to be very low throughout the forecast period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels on 26-28 Feb and 18-24 Mar due to elevated wind speeds from multiple coronal holes. Moderate levels are anticipated on 15 Mar and the remainder of the forecast period is expected to be at normal levels.

Geomagnetic field activity is expected to reach G1 (Minor) geomagnetic storm levels on 26 Feb and 18 Mar. Active levels are expected on 14 Mar, 16-17 Mar, 21 Mar and 22 Mar. Unsettled levels are expected on 27 Feb, 15 Mar, and 23-24 Mar. Quiet conditions are expected for the remainder of the forecast period. All elevations in geomagnetic activity are anticipated due to multiple, recurrent CH HSSs.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: 1. https://Twitter.com/NW7US 2. https://Twitter.com/hfradiospacewx

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

= = = = =

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NOTICE: When you buy this (or any item after starting with this link), you are helping us keep our SunSpotWatch.com and other resources “on the air” (up and running!). In other words, you are helping the entire community. So, check out this book:

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