Amplifier To Boost Transverter Output Level

pagreen69

I’m looking for a small amplifier to work on 28Mhz between the Flex transverter output at 0db and the input of a Kuhne MKU UP 2424 B (https://shop.kuhne-electronic.com/kuhne/en/shop/eshail/MKU+UP+2424+B++Oscar+Phase+4+UpConverter/?card=1880) which has a minimum input of 500mw, I wonder if anyone has any suggestions?

Hal Massey

A mini-circuits GVA-63+ perhaps? I'm not sure how much DIY you are willing to tackle here...

pagreen69

@Hal Massey Hal thanks for the reply, sadly I'm not a builder.

I have been looking at this https://www.ebay.co.uk/itm/10M-2000MHz-RF-Power-Amplifier-1W-HF-FM-VHF-UHF-Amplifier-FM-Transmit-1W-PA-/114919055834?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0 wonder if it will do the job.

Patrick

On e-bay 1-512MHz RF Power Amplifier 1.6W HF FM VHF UHF F/ FM Amateur Radio Walkie Talkie

I use 2 of these in my Home brew Transverter / Amplifier controller. You can see it on my QRZ page. They are reliable and will drive my 2 m amp to 40 watts for FM use. I know that you are not a home builder, but for two meters should be ok, but you would need a t/r switch or use separate antennas for RX/TX on 2 m. Separate antennas would avoid any need for the switch. You would use XVTR out for TX, and RX in for input signals.

pagreen69

@Patrick Thank you I'll check it out, I appreciate your help 🤝

Patrick

Please be aware that I tried at least 3 different amps (different designs) two failed after a period of time. Also make sure to put a reverse bias diode on power input of the amp. Reverse. Current from a relay can destroy these amps. I have 3 of the current design and work reliably. Forgot to add this to previous post.

pagreen69

@Patrick Thanks for the update and great information.