Friday, March 29, 2024

The KH-1 Debut

 I was giddy and ran to the door like a child to a candy store! I had missed the UPS delivery man the day before and was disappointed to see his sticker on the door. This made his arrival yesterday highly anticipated for multiple reasons. I did not want to go to the facility to pick up the much awaited delivery of my Elecraft KH-1. I am not sure if the delivery man sensed my sense of relief and glee, but I was beyond care. The KH-1 was here....

Unfortunately, I was working from home that day. That meant, I had to curb my excitement to open it up right away. I set the box aside and dove into work. When the time to log off came, I went straight to the box. When I opened it was a little underwhelming.  I had ordered the Edgewood package which included the carry case, the whip antenna, the CW paddle, the cover/log holder, a ball point pen and the built-in tuner. The box just contained individual pieces of these items wrapped up in bubble wrap. No fancy packaging or anything. If the money saved goes towards the development of radios, that is fine by me.

I played with the radio for an hour or so and put it through its paces. The included manual was well written and after my familiarization routine I felt reasonably comfortable taking it for the POTA activation the next day. The only complaint is that the printed manual is black and white, but refers to arrows in Red on a page with multiple arrows, but one can always refer to the online variant if there is any confusion...

The day of activation:

I decided to perform a pedestrian mobile activation while also recording it. I do not have any action cam or microphones. I just picked up the cheap and unused dashcam from my scrap bin and used a long shoelace to hang it from my neck. I used a USB power bank to power the camera through my activation. It may not amount to much, but one can at least get a feel for what it was like. 

The video of the activation [nearly unedited and unscripted ] is available here. Warning this is about an hour long...

So here are my first impressions

The KH-1 is an impressive package packing a wealth of functionality into a small form-factor. Turning on the radio is via a small SPDT switch near the bottom on the left hand face of the radio. The switch does not seem to be beefy and thus does not feel very reassuring. Only time will tell if this switch will take the heavy use on the field. I like the KX-3 approach of pressing multiple buttons. I am not sure why Elecraft went this way for the KH-1.

I've liked Elecraft products for their attention to user interface. Despite having just 4 buttons and two knobs, they have done a wonderful job of getting to any radio controls quick and easy. Their usual philosophy of having long and short presses on each of the buttons and sensible grouping of their functions makes learning using the rig a breeze. I am confident after a few days of use, I may not even have to look at the bright [even under direct sunlight] display.

The design to stow away the built in paddle for carrying and flipping it over for field use is clever. However, the paddle still seems a little mushy to me. I can see one operating the paddles with the rig placed on a table or other surface with ease. But trying to use the paddles while walking and holding the rig in the other hand is a little tricky. I resorted to using lower CW speeds than usual. 

The hard cover that comes with the Edgewood package, doubles as a log sheet holder. Elecraft provides a PDF template to print them out. I was skeptical about this at first. But on the field, this proved to be a fantastic design. I was able to keep logs and flip sheets of paper with ease. Further, the this cover or tray can be interchanged for left or right hand operation as desired. This clearly reflects the attention the detail that their engineers. The included 13ft counterpoise wire is also of excellent quality and will hold up to field conditions very well.

Everyone has opined about the weak internal speaker and the need to use a headphone for better copyability in real world conditions. However, as you will see in my video linked above, that built in speaker is adequate for normal outdoor conditions. But using an amplified speaker considerably increases the audio quality. 

The built-in antenna is good for 15, 17 and 20m. The BNC connector must be used for other bands. I only tried the 20m band on this activation and found that the SWR was changing considerably as I was roaming around. I even spent a stint of about 15-20 mins not being able to get a good match. I eventually (duh!) figured out to play with the whip length and once I did that I got a consistent SWR even on the 20m band. About the only thing I would want for the antenna is some kind of a joint so that I can keep the antenna vertical, while I hold the receiver tilted away from me. I did try the BNC connector on my home OCF dipole and got good match with the internal tuner for 40m as well.

Another difficulty I encountered was that I was inadvertently changing the frequency on the VFO as I was operating the rig. This was entirely my fault. I did not read the manual fully. The rig has a VFO lock functionality exactly for these situations.

So for such an excellent package, it is hard to find faults. However, here are somethings that stand out for me

  • Operating with gloved hands is going to be difficult with tiny buttons and switch
  • No weather resistance is evident. I will hesitate to pull this radio out under damp, foggy or misty conditions
  • With the logging tray enabled for right-handers, the use of headphones will require a tiny right angle adaptor if the headphones have straight jacks
  • The CW key [despite their claim of being improved] is a little mushy
  • Trying to grip the radio for long time makes it difficult. Elecraft mentions some mount points behind the radio. Perhaps a pop-socket like attachment will take the stress away from having to grip a tiny radio. This may NOT be a problem for people with smaller hands, but with large hands, you will most likely fatigue after holding it for a while.
At the end of my outing, I had great fun using this rig. It is a pleasure to use and the attention to detail in the design and execution really stands out. Personally I would have sacrificed a little more compactness and have the power jack and the headphone adapter moved to alternate locations so that they would not interfere with the logging tray when mounted either way. A slightly larger planar dimensions similar to that of a modern smart phone would make holding the rig for extended period of time easier.

I believe that the KH-1 will be wildly successful with the SOTA community where compactness and portability is the primary concern. For most of the rest of us, it comes with a steep price that may not be justified especially when compared to the venerable KX-2 or KX-3.







Sunday, March 24, 2024

A Tale of 2 (Straight) Keys

The Vibroplex and the Begali

I never thought I would become one! But like the cliched cat lady with many cats I have become an OM with many CW keying devices. However, that will be the subject for a discussion another day! Today I want to talk about two of the straight keys and the interesting differences in the way I operate them. The following video demonstrates the difference:




I made a gross simplification in the video. There are subtle differences in the keys in terms of their heights above the table plane and the height to the top of the knobs as shown below. But the difference is subtle and I did not think they would have mattered, but yet they do

Picture showing the profile of the two keys
Differences: Vibroplex on the left


I did not know of the operating style differences between Europe and North America when I initially tried both keys and was having issues with the Begali. But I ran into the following this link which prompted me to try the variations. The results really surprised me...Does the Begali know it is European? Does it want to be operated the European way? Pray tell me...

Thursday, March 7, 2024

No worms for this early bird!

As some of you know, I have a few POTA entities near work and have been activating them if and when I find time for a quick activation [See here for my earlier post on this]. I find that I really like starting off the day with POTA: I find it energizes me and starts the day off right. This routine is ingrained in me so much that I am finding to want to start the day off with an activation even on days when I work from home.

Today, was one of the days I planned on working from home. To get an activation in, I headed to the closest POTA entity to my QTH -- Maybury State Park [K-1518]. I reached there at around 6 AM (1200 UTC). I had planned on doing a quick activation, take a quick walk and head back home and log in to work. I noticed I was the lonely warrior; the only one activating any park on SSB or CW in North America. This is not unusual and I have found myself in this scenario before. Undeterred, I started my CQ sequence on 40m [ the longest band I can do with my antenna ]. 

Screenshot showing the author as the only activation in progress

Lonely on POTA

I spotted myself and waited .... and waited... I netted a meagre 3 contacts in 25 minutes. It was now 30 past the hour. My spouse was getting restless. I decided to suspend my activation and head out for a walk. I did manage to complete the activation after the walk about an hour and a half later....

My experience has been that I usually get my activations done before work; but I start those activations closer to 1300 UTC.  I will get my required contacts within 15 to 20 mins. This is one of the earliest activations for me. Given that the band was about average and nothing unusual that is going on, I believe that the hunter community starts their day around 1300 UTC.  So, does the early bird get the worm? Depends on how early it is!


Hope to catch you in the air soon!

Maybury Century

Most of the readers of my blog would know that Maybury State Park (US-1518) figures prominently in my blog posts frequently. This was the si...