Description
This is custom designed HF/6M solid state ham radio amplifier with automatically switched LPF onboard, 4 x RD16HHF1 based, intended for field or mobile operations or as driver for LDMOS amplifier. This amplifier produced from high quality ORIGINAL parts, such as Mitsubishi transistors and AMIDON cores. PA PCB mounted on metal heatsink for good heat dissipation. PA has 3 dB flatness of frequency response and PA can operate 24x7x365 in any digital modes without extra cooling.
Specifications
- Nominal power supply – 13.5v
- Maximum current is – 12A
- Idle current is – 0.8A (in TX mode without RF)
- Input frequency – 1.8, 3.5, 7, 10, 14, 18, 24, 28, 50 MHz
- Input and output impedance – 50 Ohm
- Input SWR – <1.5 for all bands
- Nominal input power – 1.5-3W (31.7-34.7dBm), depends on band
- Maximum input power – 5W (37dBm)
- Nominal output power – 50W (47dBm)
- Maximum output power – 65W (48.5dBm)
- Measured IMD3 performance is -32dB for nominal power
- External PTT signal – GND active, RCA female connector, <1 mA sink current, NO BUFFER RELAY required
- Band switching – automatic, RF sense
- Case size – 187x120x80 mm
- Weight – 1.2 kg
eHam reviews see HERE
Also please take a look to my 100W cased amplifier
Cable connection kits for Hermes Lite2, Yaesu FT-817, Icom-705, Elecraft Kx3
-55 dB RF sampler for pure signal
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Frank Triche (verified owner) –
I got my 50 Watt auto band switching amp back in April… It is a super amp… My usage is using the DBM 50watt Neptune as a go between amp for the my Hermes Lite 2 +, Has been working like a charm to power my Acom 2000A amp , I usually run between 1KW and 1200 Watts with the little Hermes.. the 50 Watt amp gets me that with 30 Watts so it is basically just loafing along… I am amazed I don’t see more reviews on this amp… it is well made and works great, autoband changing had a small problem when these came out but mine is fine and all the amps being shipped now are fine.. Changes bands as I go
73’s Frank Triche
N5WJ
Contact me if you want more info… on the Hermes Lite and the Neptune DBM 60 amp
MELISSA MARTELL (verified owner) –
I received my 50 watt amp just 4 days from ordering it. It came from somewhere near Miami, FL. Unfortunately, it came with no operating instructions. (only a schematic provided on the website.) I tested it on a QMX+ which puts out about 3-5 watts on 160 through 6 meters. The amplifier put out almost 60 watts on some of the bands. This is a high quality amp which puts the Chinese amps to shame. This amp was manufactured in Ukraine and I must say shows off the intelligence and innovation of this great country. This is a rugged and durable amp that I can highly recommend at its low price. As far as I can tell, I am the first one to use it on a QMX+. This amp requires a PTT signal and the rig must be configured to provide it. This was a challenge for this rig but it is no fault of the amp. Many modern amps require a PTT signal and it is much more reliable than RF sensing. The auto band selection was flawless. Because I am a CW nut, this amp was perfect for me.
hugs & kisses
73 88
Melissa N1HFX