Overview, build out of KM3KM's Mercury 3 HF LDMOS Linear Amplifier

[@istvanszabo8698]

It is very impressive that you measured the noise of the amplifier with good result. Once I asked ARRL Lab to do the same with A filter, not yet tested.

[@timbacchus]

Thanks so much for this. The FCC gave final approval for the ready made amp. this week 2/17/22 Looking forward to getting one. All that have the kit Love it.

[@straightpride451]

I just love the rainbow ribbon cable. It's so fabulous. LOL

[@KB2AT]

Can't wait for part 3. Just ordered this amplifier

[@projectsint7780]

Part 3 is mostly filmed and on the way. Only ran it up to 900W so far because I wasn't sure my dummy load would survive the ordeal.

[@artc9114]

Thanks for the great informative video.. I ordered mine today Kenny said 15 to 28 days.. Can't wait for the build

[@bobhoffman7142]

Just ordered one and can't wait for it to come!

[@projectsint7780]

Congrats. I am very happy with mine. Please note on page 23. The RF sample cable for the band decoder is not shown in this video and must be installed for proper operation.

[@kb2uka575]

I own one and use it everyday. Best amp I’ve owned.

[@ilangrosman]

Does this amplifier have 1 or 2 LDMOS chips?

[@kb2uka575]

Single.

[@sogosogo834]

Can Arduino based controller fast enough to protect PA board from let say hi VSWR or drain over voltage?

[@butch3715]

Does anyone know if IMD test data (3rd and 5th Order Distortion products) is available for this amplifier?

[@AntonioETilli]

Una verdadera maravilla para el KM3KM..LU3 DKS..

[@neoretrophoto9198]

What type of solder iron did you use for this. I have a 60W solder station (Weller) but I'm thinking I'll need something with more power and curious if you could comment on what you used.

[@cheng076]

Wondering how much 'construction' is involved? Are components, SMD, toroids, relays, etc mounted or must builder install?

[@projectsint7780]

Watch my unboxing video. I show how everything comes as it is shipped to you. KM3KM has done most of the hard work. Assembly is as shown in this video. Pretty straight forward.

[@MrBambaboy]

Were the cables pre-stripped?

[@projectsint7780]

Yes

[@davejensen8119]

Pre stripped and pre tinned!

[@k2icc]

Auto tuner, or external tuner needed?

[@projectsint7780]

I use a MFJ 998 auto tuner with it and a 5BTV antenna

[@MrDelta830]

Hi. Good video. Why the trap from PA out and LPF in ? Can you scan the assembly manual and send me a copy please ? Thanks

[@projectsint7780]

Please contact Kenny at www.km3km.com/ as he has all the info you will need. Much of it is on his web site TNX

[@vk2ir1]

Great video!

[@robertchortek1944]

Nice video, but you left out the RF Sample Cable.

[@RGsedona]

TNX, It is in the footnote section of comments. Missed it in the Vid.

[@timothyboyd5669]

I think I want to upgrade from my Drake L7 now

[@mrradio2187]

Tube amps have suddenly become abundant and cheap.

[@vincenzomaniaci9871]

Interessante e istruttivo.Grazie per tx video.73 IT9CYK.ITALY.

[@henrycross8776]

Did you have to solder any SMD's ? Nice Video OM de kg0tr

[@projectsint7780]

You can buy bare boards and build them yourself. You can also buy pre built tested boards. I went that route. KM3KM is very experienced at smd assembly.

[@beekeeper8474]

Man tube amp for me. Not that I don't think this is cool as hell! But can't afford solid state.

[@1OFGODSOWN]

It’s only Money and you can’t and will not take it with you.Enjoy it while you can.👍🎙

[@martyb.995]

LOGO IS NOT IMPORTANT...THE BEEP IS ANNOYING... OPEN FRAME RELAYS STILL BEING USED ???? WHY ??? THE FAN IS NOTICEABLE IN IDLE, WHAT IS THE NOISE OF THE FAN AT 1 KW WHEN IN USE FOR 15 MINUTES IN SSB MODE... I DONT SEE ENOUGH BY THE BUILDERS OF THIS AMP AND MAKE IT PROFESSIONAL VIDEO......PRICE IS GOOD HOWEVER MORE INFO WILL NE NICE LETS SEE A GOOD VIDEO THANK YOU 73.

[@marklowe7431]

Ah we have Americans speaking in metric. All we need now is to help them say the word solder correctly......... ;) I was starting think they had a fascination in soddering.

[@projectsint7780]

Must be my Massachusetts accent ?

[@wf2v]

He says it correctly. The “l” is silent, as it should be.