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I have a SBE SB2LA amp with failed filament transformer. It failed open primary. I noticed it uses a Triad 553-F182U transformer. The amp uses six 6JE6C tubes with 2.5 amp 6.3 volt filament each tube. It uses two tubes in series for a total of 7.5 amps at 12.6 volts (6 tubes). I am using 6ME6...
This site is much more civilized than QRZ site. I cannot post anything without half a dozen hecklers on QRZ. Plus, when I defend my post I get banned for a month that never happens here. Been banned plenty of times. QRZ defends hecklers and the moderators are nuts, I do not visit QRZ now.
eHam...
500 watt & 1000 watt. First the Maco 200 only uses four tubes yet has 125 watt carrier and makes 500 watts peak out. Some came with 8950 tubes and other uses 6LB6. Replacing the old tubes use 6LB6 and if it has 8950, rewire each set of two tube filaments in series. If good the four 8950 are...
Many old HF transceivers have issues such as the TS-440 & TS-450 digital display dot issue. Three reliable transceivers can be bought for about $400. Yaesu FT-840, ICOM IC-718 and Kenwood TS-570. I never read of a repair needed but guess a few broke. The best of lot is TS-570 with factory DNR...
I have tested various mobile AM CB radios and believe the Cobra 29 is as good as it gets. $89 new I find less than 10 year old used Cobra 29 for $35 on eBay. I owned a Uniden PC66 and the transmit and receive audio did not match the ultra clear Cobra 29 audio. Using the RF gain the Cobra 29 has...
If you have to have a base SSB radio the vintage CBs require all electrolytic capacitors to be replaced for starters. Oter issues may exist. IMO it is not worth it. Buy a new or used Galaxy DX-2547. Look for a 2010 or newer year. Do not turn up power out, the final transistors are not that strong.
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