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ok but but when i am on a different band and i find a nice spot where my radio and amp are swr happy all i can peak out my amp at is around 300 watts. that doesnt sound right to me

hey guys i just got a new amp al-811hd and i am having a problem when i key my rig yaesu ft-897 at 100 watts with the amp in standby my swr on my mfj-998 tuner says its flat and the radio says the swr is flat but when i turn the amp on and tune it to reseonance the swr on the radio says high swr...

Ive heard that

The al-811hd version i have has the four 572B's i heard they dont run to full potential and last longer.. is this correct? I found a link to the olny one that had the same problem i did. last post on bottom of page...

I just brought it back and got a brandy new one and i hooked it up and works great .. i noticed that i can get beter tuning and the amp isnt blowing like a furnace now .. go figure.. my luck to get a lemon..

Hro is only 45 min from here i am just going to bring it back and hope for an extange

i do run a arm-704 but the problem is its there if the radio is hooked up or not there is some kind of ossilation or a circuit collapsing every second. the tuned input board . scince i just bought it im hoping hro will extange it out. some of the soldering work in this looks like it was done by...

yaesu ft-897,, i opened the cover and i can hear the ticking in the input tuning area near the rotory switch im not sure if its coming from the coils arount the switch or the filiment choke

i just bougt this amp at HRO and hooked it up and as soon as i turned it on i hear pulses in my receive. i turnd the amp off and its quiet again so i disconnected all the cables and tuned on my portable radio shack am fm radio to a am dead station and put it near the amp and i can hear the...

im trying to run a low drive kicker safely and at the correct specs

i cant tune the rf power down any lower than 5 or 6 watts am in the radio unless i turn my rf power knob down along with it , wich is fine its just a pain in the ass everytime i want to switch to ssb ,, because if i leave the rf power down from am and swich to ssb the amp wont turn on unless it...

what did u find with this amp , i also have one and not sure on the exact drive wattage.. seems if i set them to the standars that came with it. on ssb it barly turns on.. what do u put in yours am and ssb and what do u get out of it?

Does anyone know what i can safely drive this amp at,, i set my radio to the spec that came with it , it was 5 watts dead key and 15 watts swing ,, the fact that i set my radio to these paramaters and am works ok but ssb doesnt click the amp on all the time ,, seems to tell me that it needs a...

hey guys i have a magnum 257 and im trying to stomp down the SSB power on it but if i get it to swing to about 15- to 20 watts it starts sounding like crap and not putting out power all the time. i got am down to its min about 6 watts. but ssb is giving me issues.. does anyone have any info on...

not sure , here is the same board that is in my unit,,

I finaly had a chance to open her up and see what was going on. i added to the delay cap that was in there wich is a 680uF and added 2200uf now i get my 1 sec delay.

what would you usualy do in this case?.. the manufatuer sugests no more than 15 watts swing on ssb so i tuned my magnum 257 ssb pot wich is also my alc in this radio to swing 15 to 20 watts,, can i run this a little hotter? the amp has 2 1446's driving 4 2sc2879, when i ran the amp while tuning...

I wish i had schematics on this unit , it seems to be a big secret, all i can find is older models. it works nice 2 pushing 4 but id like to solve this anoying problem that should have come out of the box working..

funny thing is it works fine on am, and it did it on my bench supply in the house. when on my meters if i dont have a dead key of 5 watts the amp wont turn on, am or ssb. im wondering if they didnt put a big enough cap in the keying curcuit.. if i have a DK of 6 on am the amp fires untill unkey...

i kind of worded it wroge chattering was the wronge word, it acutaly shuts off when im not speaking with it keyed and turns on when i start talking talking keyed,but if im not speaking loud enough it cuts out, its not staying lit for the whole keying of a transmition causing me to sound like im...