Adding that I went ahead and adjusted the jumpers for a slightly lower voltage, and it still runs great in the green zone. I can get 800w out of this amp easily, but usually run around 700w. This amp has fabulous protection on it. This is a fabulous amp!
I wanted to update what I've learned about running the Icom 7300 with this amp. It seems like the best way to squeeze full average power out from the Icom 7300 is to: 1. Turn off the 7300's compression. 2. Set the mic level so that your voice is just peaking up to max 1/3 (or less) of the ALC range. 3. Turn the compression on anywhere from 1 to 5, per your preference (5 gives me about 10 to 15 percent compression, the max I'd recommend going, for DX). My mic gain ends up around 20 with stock mic, and EQ settings around 0 for bass, and +1 to +3 for treble. I talk across the mic, with the edge of my lip almost touching. The 7300's ALC is very aggressive, and will tamp down the level too much, if it's in the higher ALC range. Seems to work much better to keep the 7300's ALC in the low range, and beef up the compression. People give great reports, and my average power out is higher to the amp. I only max about 70% output most of the time, given this higher compression level from the 7300. It can push higher, but I like to keep the needle on my peak-reading meter bouncing without overdriving. With other radios, that's too much compression for this amp to sound its best, but the 7300's average power output is still weak enough that it's a decent mix. FYI: My peak-reading average on the 7300 is about 103 watts... it's the average power that is weaker compared to most rigs. The above settings help this a lot, because it helps keep the aggressive ALC in check.
I dream of getting one like that also to run on my 7300... but man, they are sooooooo expensive... the last one I saw on ebay was 2600$CA... at that price I can get a brand new Acom 1010...
I have the same amp, all bands except for 20 meters put out around 750 with 70 watts input on 110ac. For some reason 20 meters is only given me about 250? Any idea?
This model has not been sold for a while. The Tokyo Hy-Power company went under because it was also owned by another company that pulled it down with it, due to financial difficulty.
Adding that I went ahead and adjusted the jumpers for a slightly lower voltage, and it still runs great in the green zone. I can get 800w out of this amp easily, but usually run around 700w. This amp has fabulous protection on it. This is a fabulous amp!
I wanted to update what I've learned about running the Icom 7300 with this amp. It seems like the best way to squeeze full average power out from the Icom 7300 is to: 1. Turn off the 7300's compression. 2. Set the mic level so that your voice is just peaking up to max 1/3 (or less) of the ALC range. 3. Turn the compression on anywhere from 1 to 5, per your preference (5 gives me about 10 to 15 percent compression, the max I'd recommend going, for DX). My mic gain ends up around 20 with stock mic, and EQ settings around 0 for bass, and +1 to +3 for treble. I talk across the mic, with the edge of my lip almost touching.
The 7300's ALC is very aggressive, and will tamp down the level too much, if it's in the higher ALC range. Seems to work much better to keep the 7300's ALC in the low range, and beef up the compression. People give great reports, and my average power out is higher to the amp. I only max about 70% output most of the time, given this higher compression level from the 7300. It can push higher, but I like to keep the needle on my peak-reading meter bouncing without overdriving. With other radios, that's too much compression for this amp to sound its best, but the 7300's average power output is still weak enough that it's a decent mix.
FYI: My peak-reading average on the 7300 is about 103 watts... it's the average power that is weaker compared to most rigs. The above settings help this a lot, because it helps keep the aggressive ALC in check.
beautiful amplifier, this is a gem, keep it !
I dream of getting one like that also to run on my 7300... but man, they are sooooooo expensive... the last one I saw on ebay was 2600$CA... at that price I can get a brand new Acom 1010...
Nice review, thanks for posting
Have the same amp, all works good full power except for 20m? Any ideas.
Great quality , very nice products ..
I have the same amp, all bands except for 20 meters put out around 750 with 70 watts input on 110ac.
For some reason 20 meters is only given me about 250? Any idea?
Markinpuff the schematic shows a low pass filter for each band. It is switched by relays. Thus a guess is the trouble is on this area
Good Day... where to buy..pls drop me message. Asap tanx
This model has not been sold for a while. The Tokyo Hy-Power company went under because it was also owned by another company that pulled it down with it, due to financial difficulty.
@@cleanairideasin9491 do you have any idea or someone knows to find this kind of stuff..tanx for replying with me.
@@liamdee9926 They are sold on websites like Eham and qrz.com in the USA, occasionally.
Yes, you’re not ok below the green.
get a watt meter
Have