Posts Tagged ‘amateur radio’

My #POTA Pickle, or How I Learned to Stop Worrying and Love the ARRL #DX Contest

Sunday March 4th was a beautiful and slightly cool (mid-seventies) day in Jupiter, Florida and was the day I selected for my first #POTA activation (parksontheair.com).  I picked the 11,000 acre Jonathan Dickinson State Park, KFF-1887, just six m20180304_103921.jpgiles from my Florida QTH.  I scouted out locations a few days earlier and chose the picnic area near the river, with cooperating pine trees with handy limbs.  Using my unique antenna launch tool (see pic) on only the second try I hit my target limb and hoisted the “high” end of an EndFedz antenna cut for 20 meters.  My battery was charged, I had my sandwich, I even had a cushion for the hard picnic table bench seat.  Right on time I was ready to spot myself, all settled and happy.  Do you hear a “but” coming?

This was 20180304_112008.jpgalso the weekend ARRL chose, without checking with me, for their hugely popular annual DX Contest.  There were a few thousand hams on 20m, most, it seemed, with a kilowatt and a pretty good beam competing with me barefoot with a dipole up all of fifteen feet.   I spotted myself on DXSummit.fi but apparently nobody cared.  I raised my friend Rick on the local repeater and got him to listen for me at 14.244 a few miles away and we could barely hear one another on ground wave.  We were in a wall of sound (and I was learning the value of a filter for sideband.)

So there’s my POTA Pickle; I’m in the right place and all set to operate POTA but cannot compete with a thousand big gun stations.  Well  golly, let’s join in on the fun then.

First I took down the End Fedz that just doesn’t work that well for me and put up my link dipole made from lamp cord and began to hunt and pounce.  Worked a dozen international stations in an hour and called it, after all, a good non-POTA day.

This is Wayne,  K4WK, http://www.hamdom.com. Thanks for listening; you’re in the log.

 

Ham Radio Deluxe 6.4.0.794 Released

I just received some good news from Mike, WA9PIE.  He writes in an email:

The first release of Ham Radio Deluxe for 2018 (Ham Radio Deluxe version 6.4.0.794) is now available for download. Please download it from the Download pages on our website at:

https://www.hamradiodeluxe.com

This release includes a number of important changes including the addition of the Icom IC-7610, resolves a Logbook exit problem, resolves “sort on LOTW date”, API for QSO Forwarding now populates Logbook with My Station data, a number of fixes for the Kenwood TS-480, applications remember screen position, enable CI-V address to be entered directly, and a number of stability enhancements.

The full release notes can be found here:

http://ReleaseNotes.hamradiodeluxe.com

I would like to acknowledge and thank Mike Blaszczak (K7ZCZ) and our beta team on their hard work in getting this release out.

All those who have purchased Ham Radio Deluxe at any time in the past should download and install this version in order to benefit from all bug fixes. You are entitled to them. Our clients who are covered by an active Software Maintenance and Support period are entitled to Feature Enhancements.

As announced previously, we expect to release as many as 9 releases in 2018. There will be no releases between 1-Nov and 1-Jan. We continue to focus on reducing our development backlog with five developers dedicated to all applications in the suite.

Please watch these newsletters for updates. Pass these updates along to your friends. Newsletters will also be posted on our website’s blog at:

https://www.hamradiodeluxe.com/blog

Thank you es 73 de Mike, WA9PIE

HRD Software, LLC

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

 

On the Air – SOTA, POTA, BOTA, IOTA and now, COTA

The newest OTA I’ve discovered is the World Castles Award, or COTA – Castles on the Air. Not sure if COTA is official or not, but let’s call it that for now, since it rhymes so well with SOTA, POTA and BOTA. (IOTA is only a half-rhyme).

You might think “We Americans don’t have any castles here; we were settled after the period of castle-building, so how is this relevant to me?” Well, you can think that if you want to, but you might be wrongish. True, we have no castles in North America (or do we? – see below), but we do have other structures that the wise men and women of WCA have recognized as eligible structures of note. Happy Dance! Here’s a new game we can play once we’re all worn out activating all the mountains in SOTA, parks in POTA, and beaches in BOTA.

Here in the Southeast that I inhabit, there are scores of eligible structures. In my own tiny hometown of Decatur, GA, pop. 18,000, I find that we, too, have a castle called Oakhurst Castle. I need to find out what that is, and of course, activate it. Look for me on Dxsummit some day.

Forts, even if not fortified, can qualify, such as Fort Jackson, SC, where I spent three happy months one summer and most if not all other military bases with “Fort” in their title. Also, historic forts like Castillo de San Marcos in St. Augustine, Florida qualifies but the towns of Fort Lauderdale, Fort Myers and Fort Pierce where we can imagine forts once stood, are sadly excluded. However, don’t despair – you can still go to the beach in those towns and activate your suntan via BOTA!

Mansions, or “Stately Homes,” also seem to qualify, such as the indisputably stately Biltmore House in Asheville (raise your hand if you’ve been there). The WCA styles it as “Biltmore Castle.”

Scanning the list I see others in my haunts I can consider activating and some that raise questions such as one on Marco Island known only as “Unknown Castle.”

But there is one I expected to see that has been overlooked – probably the only purpose-build Castle in the United States, and it’s certainly not unknown; of course I’m talking about Cinderella’s Castle at the Magic Kingdom (raise your hand again if you’ve been there). If you are as hurt as I am at this (rather slight) slight, please join me in a letter-writing campaign to the WCA to help right this wrong. We’re Americans – we fought for our freedom, now we must fight for Cinderella’s honor!

Signing off for now, de k4wk, www.hamdom.com. Thanks for listening; you’re in the log.

A Personal Self Defense Weapon, a Utility Hammer, and a DMR #Hamradio, All-in-One

My first impression of my new TYT MD-380 (and Steve, KA4RSZ, felt the same way), was the solid, sturdy feel of the thing.  Not at all what you’d expect from an $88 plastic cased electronic device of any sort.  We were both quite impressed, and the reason has become clearer as I’ve learned more.  This radio or its kin, were built for non-ham, heavy-duty use by folks like security guards and retail store personnel, not dainty and refined hams such as ourselves.

Reading the User’s Manual has been fun, and incidentally makes the bizarre Icom manuals seem lucid.  Filled with handy tips, I love where it cautions me on page one “Do not transmit too long, for the radio may heat and hurt the user.”  Also advising “if the radio appears smelly or smoke, please shut off…”  Great tips for us all.

On page six it is reassuring to be told “wearing the radio in your waist will not make you feel uncomfortable.”  I just love Chinglish!

Signing off for now, de k4wk, www.hamdon.com.  Thanks for listening; you’re in the log.

ETH096 – School Club Roundup, Hamvention Update and More…Everything Ham Radio

Hello everybody! In this episode of the Everything Ham Radio Podcast, I am stuck by myself talk to yall. I unfortunately didn’t remember that I my next scheduled update was due until 4pm the day before. So I worked all afternoon, while at work, trying to figure out what I was going to talk about. When I got off work at midnight, I ran home and did my couple honey-dos and then went straight to recording the episode.

So what is in this episode?

First off, I made a mistake! Yea, I know, nobody is suppose to make mistakes right? Well, in my last episode I did. In last episode, my semi regular co-host Ian KM4IK and were talking about the big stink that was doing on with some things that the ARRL Board of Directors were going to be voting on. Neither one of us were really up to speed on the whole thing as much as we should be, but we did our best, and we even said that we weren’t. However, after the episode I did receive multiple emails saying that I said something wrong, so I corrected it in this episode.

With that out of the way, I went on to talk about an upcoming event called the School Club Roundup. It is this month only a few days away actually. The event run February 12-16, 2018. It is an event that is geared for school amateur radio clubs to get on the air and make some contacts. Even if you are not in a school club though you can still get on the air and make contact with the school clubs that are on the air and help them make the points.

After that, I moved on to Hamvention. Another correction from last episode. Well I say correction, this time it wasn’t me though. In last episode we talked about how a new building was going to be built and available by this Hamvention. However, this week, the Hamvention committee released that it wouldn’t be started on until later in the year due to a material shortage.

I wrap up the episode reading some emails that I have received over the past few weeks. The last episode of 2017, I told yall what my plans were for 2018 and asked what some of yalls were and also asked some questions about what were yalls opinions on how my show is. I got a few responses, wish I would’ve had more though.

Until Next Time Yall…

73 de Curtis, K5CLM

Rest in Peace, David Collingham, K3LP, SK

David Collingham, K3LP now SK

RIP David Collingham, SK – K3LP is now SK.

My condolences to the family and friends, and to our radio community, for the tragic loss of David Collingham, K3LP.

I am sad and sorry for his loved ones and friends who now grieve this loss.

May his memory echo through the ether like radio waves, reaching the receivers of our hearts.

Passing along a note from Paul, N6PSE:

Dear Friends of David Collingham-K3LP:

I have learned additional information concerning his death.

Last night, during a heavy winter storm, David let his dog outside. David later took his truck to search his 25-acre property when his dog did not return. David found that his dog had fallen into an icy pond that adjoins his property with another property.

David made the heroic decision to go into the pond to try and save his dog.

After some time had passed, David’s wife Rebecca went looking for him. She found his truck at the pond and called 911. Fire personal recovered David’s body as well as his dog. Efforts to resuscitate him were unsuccessful.

David lived his life bold, courageous and heroically and he died trying to save his beloved dog. He will always be a hero in our hearts.

RIP David R. Collingham, age 59.

 


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