Hi Brett, Thanks for the offer. Sure, I'll take some. Would you like money for the postage? My address is
Ellen Rugowski, AF9J 10050 West Beloit Road Apt. 35 Greenfield, WI 53228 73, Ellen - AF9J ----- Original Message ----- From: "Brett Gazdzinski" <[EMAIL PROTECTED]> To: "Discussion of AM Radio in the Amateur Service" <[email protected]> Sent: Saturday, February 23, 2008 9:23 AM Subject: Re: [AMRadio] More Viking 2 news > Ellen, > I think I can give you a bunch of 807's, I don't and would not use > them anymore, I go with KT88's or KT 90 tubes as modulators. > > So, I likely have a crap load of 807's (and 1625's). > > Send me your mailing address and I will get what I have out > to you. > > You should check the screen and bias voltages at the tube sockets to be > sure they are ok. > Resistors in most applications can be off 20% without causing any problems. > > Brett > N2DTS > > ----- Original Message ----- > From: "Ellen Rugowski" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Friday, February 22, 2008 11:42 PM > Subject: [AMRadio] More Viking 2 news > > > > Hi Everybody, > > > > Work's been kind of nuts lately, and I've been pretty burned out. So, > > I've > > only been able to work on my Viking II sporadically. Last Sunday night, I > > finally got around to wiring up my D-104 with the mic connecter Ed, VA3ES > > sent me, for use with my Viking II. With the mic finally wired up, I was > > able to determine that yes, my Viking 2 is wired up for PTT (the PTT in > > mine > > works fine). I also was getting OK modulation of of my Viking. BUT, after > > no more than about 5 seconds of mic keydown, the modulator current would > > surge, and start to run away. Well, due to the fiasco the CQ 160m Contest > > is turning out to be for me, I decided to work on my Viking 2's modulator > > issue. > > > > Well, it looks like I found my problem in spades. After only about 2 or 3 > > seconds of mic keydown, in spite of the fact that I had the mic gain/audio > > level at zero, the modulator current surged again. I unkeyed the mic, let > > things settle down, and keyed up the mic again, watching the 807s. Sure > > enough, the modulator current surged again, and when it was happening, > > what > > did I see? - a nice BIG arc over between the plate and the grids on one of > > the 807s! I shut things down, pulled the 807 out that arced, fired up the > > my Viking 2 again, and keyed the mic, with only the non-arcing 807 > > installed. Nothing happened, other than the fact that the modulator > > current > > stayed > > steady at a pretty low level (due to there only being one 807 installed). > > So, it looks like I need to buy another 807. And maybe, it might > > be wise for me to get two of them, and save the one remaining good one > > have > > at the present, for a spare. BTW, the resistor on the plate cap for the > > bad > > 807 is supposed to read 22 ohms. Assuming that's it's your typical +/-10% > > resistor (personally I prefer +/- 5% or better), it shouldn't read more > > than > > say 25 ohms. The cap resistor on the bad 807 read 28 ohms. Well, there > > isn't much more I can do with the Viking 2, until I get the new 807s. I > > don't feel like pulling off the mic connector I installed for the Viking 2 > > (wiring up mic connectors is a pain), and I haven't gotten the mating > > connector yet, that I need to wire up an adapter cable, so I'm out of luck > > with using the Scout for tomorrow's Midwest Classic net. I'll only be > > able > > to listen to Rob, run the net. Well, I think I'm going to call it a > > night, > > I'm falling asleep. > > > > 73, > > Ellen - AF9J > > > > ______________________________________________________________ > > Our Main Website: http://www.amfone.net > > AMRadio mailing list > > Searchable Archives: http://www.mail-archive.com/[email protected]/ > > 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:[email protected] > > 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/[email protected]/ > 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:[email protected] > 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/[email protected]/ 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:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
