Tony: Mouser has some 16 uf. 450 volt caps for the bias. In the same listing as those, you will find 80s. I believe 80 is what the HV circuit used. Part numbers are 75- TVA1803.1 for the 16s and 75-TVA1716 for the 80s. Don't know what the Thunderbolt had but will bet you can find them at Mouser also. 800-346-6873.
As for audio mods to the Valiant, Steve W8TOW has some and there are others that do the job. I believe I have some and will copy to send to you if you want. Let me know. I am surprised Steve hasn't posted his web site for you to look by now, surely he will read your post and do so soon. If he doesn't, do a Google for his call. 73 Jim de W5JO ----- Original Message ----- From: "Anthony W. DePrato" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, September 23, 2003 6:05 PM Subject: [AMRadio] valiant problems > Well after setting for over a year . i wanted to fire the valiant up last > weekend.. everything went great till i keyed the relay.. HUMMMMMMM. man do > not remember that hum in the 75A2 last time i keyed the transmitter.. > switch the meter to MOD keyed transmitter PEG...... fuse blows... OK... put > in another fuse fire it up ok key dowkey antenna relay HUMMMM... this is > not right hi hi.... start undoing antenna . SPARK SPARK.. bad sign... got > the old 260 out have 60 volts a.c. to ground.. well no wonder it > hummmed hi.. hi.. now to find some 15 mfd 450v caps jezzz why not just > recap the whole transmitter while i have it on the bench... do the Audio > mod also... my question where was the audio mod found ? have to get the old > AES book out tomorrow and order the caps.. > guess i should just recap the Thunderbolt while i am at it.. > what is a good place to find HV caps ? > fired up the HT 37 SX 115 on 40mts . and worked a few stations running 20 > watts high power AM hi hi.. > Thanks for any help > 73 Tony wa4jqs > > Anthony W. DePrato WA4JQS > Since 1962 > WA4JQS / VP8BZL / VP8SSI / 3Y0PI > CQ DX Hall Of Fame # 35 > > _______________________________________________ > AMRadio mailing list > [email protected] > http://mailman.qth.net/mailman/listinfo/amradio >
