Recent content by EA5HIY

Hay Oldtimer, because your KLV 550 is 550 watts PEP d.i input, so your output with 250 watts is more than oke with the drive you have !! EA5HIY John

jim, look at the rearside where the antenna connectors are, most of the time you will find a name or product name there, but it looks very much like the one I have, there seems to be two transistors in it, if they are MFR 454,s the amp willbe good for about 250 watts.The amp I have is from the...

dear Slamdunk, thats not the way to do it Hi Hi. 73, sde EA5HIY Johan

oke, you should look in " Circuit Improvements for the Heath SB-220 Amplifier. there is an article writen by Rich, AG6K everything about the SB220 . I think you can find all the answers there, if not, there is a group in YAHOO users with a forum, BUT you must have a legal hamcall cause they...

airplane, most of the tubetype linears are not flat 1:1 on the input side, so your driver rig sees something else as 1:1 this can be corrected, BUT you have to make adjustments in the AMP, not in your rig. to do this, you have to be familiar with the amp and the guts of it !!be carefull with the...

Hey there, this sounds like a fairytale, never heart about 3,5 kw from a sb220. they go up to 1,2 kw and thats about it, maybe a little more but NOT that much more and besides, 350 watts input ?? I think a 100 is about the max you should put in to it, otherwise your neighbor HAMs are complaining...

yea, this is a comon problem, mesure your swr behind your amp. and adjust ther so the amp sees 50 ohms or flat swr. your swr between your radio and the amp, most of the time is oke. hope this is of any help Johan, EA5HIY

is there anybody around, knowing this amp. it is made by " BRAINCHILD ELECTRONICS CORP. JAPAN "" I cannot find them in google, just one in Taiwan, but thats a other corp. like to convert it to HF HAM USE, it works oke on 10/11 with 250 pep out transistors are 2 x mrf 454, no lowpass filter...