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I used a small jewelers screwdriver.? No soldering necessary with the kit.

It was a little bit of a pain ensuring the wires remained in the slots whilst screwing them down, and that's because they are just so darn small.?

Let me know how it goes for you.? One thing that comes to mind, don't trust me and don't trust the ebay sellers pin outs.. Quickly check them to ensure they are right. They should be but double check.

Best Regards,

David

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The only input issues I have heard of happening with the LA1K resulted from overdriving the Amp with a 200 watt radio like the 101mp. I would contact Palstar on Monday morning and get their opinion.


Ron?
WD8T


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This morning while transmitting on 3.965mhz I noticed a HI SWR warning on my FTDX101MP. At the same time, the LA-1K displayed SWR=1.0 and the HF-Auto SWR = 1.04. I have discovered that the LA-1K RF Input has HI SWR while in "Operate" mode. In "Standby" mode the RF input has normal antenna/Tuner SWR. The LA-1K will NOT amplify on 160, 80, 40 but WILL amplify on 20, 15, and 10. On 10m 10w results in 200w out. It appears something has happened to the LA-1K RF input. Any ideas what's going on???

73 Jerry
kd4xr

David,

Thank you for your nice post depicting the different color coding.? I purchased the same items as you because they arrived the quickest.

Quick question:? Did you solder your wires to the board as Joe did or did you attach the wire ends with the screws?

And if you used the screws, did you first tin the wire ends?

Thanks,

Dirk

Joe,

Your?kindness and helpfulness is amazing.?

I am almost a complete total newbie when it comes to understanding and setting up radios, tuners and amplifiers.? Yes, I have read the manuals, watched the YouTube videos, etc. but you have a way of making things much more easy to understand and implement.? Thank you!

I will print out the step sheet you posted and use it for the first few weeks until I feel I have learned the basics of operation.

I appreciate you and the helpfulness you have given.

Dirk

Joe,

I was curious if I will need to change any of the settings on the Yaesu FT DX-10 after connecting it to the LA-1K with the home made cable?

I spoke with Mark via phone yesterday and he was super kind and super helpful.??

Joe,

I had no clue about adjusting the HF Auto.? I have read the manual, but I think I need to read it several times to obtain a better understanding.

Yes, I too miss the Heathkit days.? I am presently looking for a good deal on an excellent condition Heathkit 220 amplifier.? They still have an awesome reputation even after many years.? With a few mods they seem to do well.

In the 70's, I felt the Heathkit Battery Eliminator IP 2715 was one of the best power supplies around and I enjoyed assembling and using them.? Now I have the Antron -70 AP-M and it is kind of hard to beat.

Many people do not realize how easy it is to convert computer ATX power supplies into 12 volt/5 volt bench power supplies.? It only requires a tiny circuit board.? I have converted so many that I lost track of how many.? An 850 watt ATX computer power supply can give 70 amps output and I have used them to power RV's, radios, etc.? They work extremely well and their longevity even at massive amp output is amazing...

Thank you Philip!? I will have a look at the different varieties.

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Email Mark.engineering2@...

Dirk,
I also built many Heathkit projects as well. I enjoyed the whole process and miss those days of beginning a new kit and taking it to a functioning finished product. Did I fully understand what I was doing? Not really. But it was satisfying to see it all come together. Today's surface-mounted component technology has mostly eliminated hand assembly and soldering on circuit boards. The LA-1K is a great amplifier and pairs well with the FTDX10. I also have the HF-Auto and it's a sweet antenna tuner. Another note is you'll need to adjust the settings on the amp once the cable is connected. See page 21 – Direct Mode Keying in the LA-1K manual.?
Good luck!
Joe WW8X

Hello. There are DB (and others) connectors that have screws instead of soldering pins, they are easy to work with many little wires and they are also good for experimenting with custom?made cables.

My 15c

Philip
CE4PS

Joe,

Thank you for your help, especially the clarity on the finer points.

Years ago [1970's] I built a myriad of Heathkit items.? My favorite item to build back then was the Heathkit Battery Eliminator IP 2715.? One of the most challenging of the kits was the Heathkit remote control kits.? Heathkit sold the transmitter, receiver and servos kits for remote control airplanes back then.? Building and soldering the servos, receivers, etc. were a bit of a challenge because nearly all the components had to be mounted and soldered in a vertical rather than a horizontal orientation.? But I got it done and they worked well for years of fun.

I grew up in Silicon Valley.? Back in the 60's and 70's many companies in SV had assembly lines where people sat at work benches and installed components on printed circuit boards and then soldered them for 8 hours a day.? It was a great way to learn to solder!? Some companies paid not by the hour, but by how many successful circuit boards you soldered.? This led to people learning to solder very quickly and very successfully.

Years later I was totally blown away when for the first time in my life I saw an assembly line fully automated where numerically controlled machines shot hundreds of electrical components into the circuit boards in a matter of seconds.? My how we have come a long, long way!? Want to know know what I enjoyed the most?? When a machine malfunctioned [and it happened often] thousands upon thousands of resisters, diodes, transistors, capacitors, flew all over the floor.? The management's attitude was it wasn't even worth the time/effort to re-sort them, so they threw them away.? I was able to collect thousands of items because they simply did not want them.??

I have ordered both the din cable and the DB9 for my Yaesu/Palstar combo and am excited to learn much more about amplifiers, auto tuners and radios.? I am especially interested in learning more about how they interact with each other.

I appreciate you and the patience you have shown me.

Have great day!

Dirk

Thank you Joe!

Did you leave the board open or were you able to cover it?