Hi Mark, Well spoken...
I once had to replace the MRF-422(?) RF power output transistors in my FT-980 here...for what I paid for these wonderful, low-voltage, SAFE solidstate devices, I could have purchased a LOT of 12BY7's & 6146's...! Some of these god-sent transistors cost more --- and are a LOT more rare --- than tubes to-day, especially the sand-derived active devices from earlier no-tube gear (have you priced direct-replacement germanium power transistors lately, as were employed in the multi-vibrator power supplies of 60's/70's mobile QRO equipment...?!). ~73~ Eddy VE3CUI - VE3XZ ----- Original Message ----- From: "Mark K3MSB" <[EMAIL PROTECTED]> To: "Discussion of AM Radio in the Amateur Service" <amradio@mailman.qth.net> Sent: Monday, April 21, 2008 11:27 PM Subject: Re: [AMRadio] Getting on the Air - May 2008 QST > "My first recommendation would be to only consider older vacuum tube > or hybrid gear (solid state receiver, tubes in part of the > transmitter) if you have experience working with vacuum tube > transmitters. It is too easy to destroy hard to get transmitting > tubes while you learn". > > One of the most common PA line ups of hybrid transmitters is a 12BY7A > driver and a pair of 6146 finals. Without searching hard, you can get > all 3 NOS at a fester for $12; less if you put some effort into it. > > 73 Mark K3MSB > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net > To unsubscribe, send an email to [EMAIL PROTECTED] with > the word unsubscribe in the message body. ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
