Any one using KM3KM amplifier

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vu2mb
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Any one using KM3KM amplifier

Postby vu2mb » Sat Apr 10, 2021 1:45 pm

Hi
Is there anyone using KM3KM Amplifier with ANAN in the forum?
Thank you & 73
Bhanu
VU2MB
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w-u-2-o
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Re: Any one using KM3KM amplifier

Postby w-u-2-o » Sat Apr 10, 2021 7:42 pm

I'd buy one in a second if it had remote control over the network. I asked him if it was planned for the future. Unfortunately it is not.
kc2rgw
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Re: Any one using KM3KM amplifier

Postby kc2rgw » Sat Apr 10, 2021 10:37 pm

That is AKA the Mercury III amp. Should work perfectly. I know a few guys running them and they all like them a lot. Shouldn't be much specific to an Anan as the exciter.

Here is another site with a bit more information. https://www.qsl.net/rz1zr/linear-power- ... iiis-.html

You'll likely want an RF sampler to use with Pure Signal though.
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vu2mb
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Re: Any one using KM3KM amplifier

Postby vu2mb » Sun Apr 11, 2021 12:39 am

Dear Scott & Chris,

All reviews are 5 stars so I decided to take the plunge but it did not materialise as he said it will take 90+ days and I requested him to get it delivered within 70 as I would be in the US by that time and would extend my stay by 10 more days. He was adamant about the timeline. Later I and a friend decided to buy PCBs and paid $400 including decoder chips for 2 sets of PCB's and next week they will be delivered in Seattle.

Regarding PCB purchase I expected stencil with PCB as he mentioned on his website that you need a stencil and the video too explained how to use a stencil, but he refused to give any stencils
https://www.km3km.com/smd-welding/

His BOM too is not perfect as I noticed some missing parts, Waiting for PCB's Image of the silkscreen to match components. ( BOM on his website and the one supplied does not match. May be the supplied one is newer.)

He refused hardware kit like fan folders and LCD supporting plate and other hardware by paying the cost.
He mentioned that he would not dedicate much time for support and that this project is not for faint hearts. Though his website mentioned that it's for starters and advanced hams alike and he would answer all making related emails.

RZ1ZR is selling the firmware and also the kit of KM3KM but assembled by him in Russia and he demanded 25 days but by that time we decided to buy PCB's and build it ourselves. Have RF Sampler from AC2IQ.

Thanks & 73
Bhanu
VU2MB
kc2rgw
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Re: Any one using KM3KM amplifier

Postby kc2rgw » Sun Apr 11, 2021 11:37 am

Ah ok, the high demand is probably causing them some trouble. These amps are becoming very popular quickly.

My friends got a complete kit where all the surface mount parts were fitted and tested. All they had to do was assemble some jumpers between the boards. Very minimal build that most did in just a few hours time. I would say the people I know that assembled these were of avg technical ability and by no means serious bench techs.

I have a Palstar LA-1k and an RF Kit RF2K-S and really like both of them. It’s really nice having a no-tune amp.

You may even be able to modify the Mercury for low input drive as well. I like being able to run the exciter below 20W to get full output.
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Tony EI7BMB
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Re: Any one using KM3KM amplifier

Postby Tony EI7BMB » Sun Apr 11, 2021 12:45 pm

Very cool looking amp , love the screen
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vu2mb
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Re: Any one using KM3KM amplifier

Postby vu2mb » Sun Apr 11, 2021 5:03 pm

Dear Chris & Tony,

Yes, it may be in high demand otherwise he would have agreed to deliver in 70 days. I too love this amp and a friend convinced me to make it together from scratch and I thought it would be fun. Now components will be sourced as per BOM from the US and China and then shipped to India hopefully by the month-end.

73

Bhanu
VU2MB
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WU1T
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Re: Any one using KM3KM amplifier

Postby WU1T » Wed Sep 22, 2021 6:02 pm

Anyone know if the KM3KM amp is rated for use on AM?
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W1AEX
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Re: Any one using KM3KM amplifier

Postby W1AEX » Thu Sep 23, 2021 1:04 pm

WU1T wrote:Anyone know if the KM3KM amp is rated for use on AM?


I'd love to know what its rating is in AM linear service as well. They do list AM in their manuals (see below) but no operational specifics for AM linear service are mentioned. I would guess that it most likely surpasses my ALS-1306 which I run with my ANAN-200D in AM linear mode at between 150w to 200w carrier without ever complaining. Looks like a great amp (I did not see anything but 5-star ratings in the 4 pages of reviews at eHam) if they can ever shorten the lead time from ordering to arrival on your doorstep!

Rob W1AEX

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"One thing I am certain of is that there is too much certainty in the world."
G1XOW
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Re: Any one using KM3KM amplifier

Postby G1XOW » Thu Sep 23, 2021 4:51 pm

Take a look at the Gemini DX-1200 2 x BLF188XR, pre built and tested. Still long delivery times at the moment though.

https://thedxshop.com/product/dx1200-so ... amplifier/

73 de Steve G1XOW

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