[AMRadio] SX-28 parts needed
howdy y'all I need the following items to make my SX28 complete bottom cover S meter or at least the face out of it the antenna posts on back, including the insulators anyone have these beasts on a parts unit? 73's and GOD BLESS AMERICA! The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] relay needed
howdy men anyone have a spare dpdt realy with 10A contact? 117V coil? As small as possible I sure need to purchase or trade for one R The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] boatanchor Manual sought
first, it aint a radio, but it will be used with one. Anyone have a manual or a copy I can get, of a heathkit audio amp, A9A??? thanks in advance R The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] feed through insulators needed
Howdy y'all Im in need of 2 feed through ceramic insulators. I'm trying to match two I already have. The ones I need will provide 1" of clearance from the chassis, and will feed through a 5/8" diameter hole. anyone have a couple of these mighty critters? I have lots of feed throughs that are larger and smaller for trade, or have LOTS of ceramic standoff's of various sizes from tiny to huge!! R The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] Looking for old qsl cards
>From WN5AIA and WB5AIA from 1969 - 1975. Don't make a special effort but if any of you fellers happen to be sorting through old cards... I just may make an inventory of QSL's I collected in my novice and early general days, and post it somewhere. I may have a card from some of you fellows!! 73's Ronnie The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] (no subject)
do a search for BAMA which stands for boat anchors manuals archive they are all there for free to download Ronnie On Fri, 9 Jan 2004 08:46:57 -0800 (PST), Jeff L. Potts wrote > Hi >I need a manual for a DX100B, A National NC77X, and a > Hammarlund HQ145. If I could get a copy from someone it > would help, I have just got started in this boatanchor > equipment and need all the help I can get JEFF > > - > Do you Yahoo!? > Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes > > --- StripMime Report -- processed MIME parts --- > multipart/alternative > text/plain (text body -- kept) > text/html > The reason this message is shown is because the post was in HTML > or had an attachment. Attachments are not allowed. To learn how > to post in Plain-Text go to: http://www.expita.com/nomime.html --- > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] SX28 Military manual needed
I downloaded this from Bama, but what they are calling the military manual appears to be just the regular manual that I already had. I would love to have a copy of the military manual for the SX28, NOT the A model.. anyone have a copy or original they will sell? Ronnie The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] another SX-28 question
sorry gang about the language.. I thought that was going just to jeff LOL Happy New Years ya'll R On Wed, 31 Dec 2003 09:48:30 -0500, w5sum wrote > good morning Jeff > > yes there is an AVC switch and it is on... I think the problem is, > that this is a non linear pot I dug up... measuring the resistance, > it moves slowly for just a cunt hair, then it JUMPS quickly... I'm > going to change this out first > > Happy New Year to ya!! > > Ronnie > > On Wed, 31 Dec 2003 07:58:36 -0600, Geoff Edmonson wrote > > > the RF gain control was not working at all. I found a pinched wire that > was > > > grounded. This was the wire going to the cathode resistor of V-1. I fixed > > > this, and even put a new pot in there for the RF Gain. It works BUT.. all > > > you have to do is just barely turn it and it blanks out the front end. > > > Could one of the cathode resistors have changed value, canceling out the > > > work of the rf gain control? R-3 to V-1 or R8 to V-2? Or, possibly, C14 on > > > V-1 or C18 on V-2? > > > > Just a silly-assed question, Ronnie - mainly because I don't remember... > > but is there an AGC control switch on the front of the SX-28? It > > should be ON. Without the AGC circuit being active, you could have > > the same effect - any signal would send the front-end to saturation. > > > > Happy New Year! > > 73 = Best Regards, > > -Geoff/W5OMR > > > > -- > > 7:56am up 2 days 14:23, 4 users, load average: 0.17, 0.65, 0.84 > > > > ___ > > AMRadio mailing list > > AMRadio@mailman.qth.net > > http://mailman.qth.net/mailman/listinfo/amradio > > The "AM" voice of Shreveport, Louisiana USA > formerly WN5AIA and WB5AIA > I got my Extra Class the old fashioned way... I earned it! > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] another SX-28 question
good morning Jeff yes there is an AVC switch and it is on... I think the problem is, that this is a non linear pot I dug up... measuring the resistance, it moves slowly for just a cunt hair, then it JUMPS quickly... I'm going to change this out first Happy New Year to ya!! Ronnie On Wed, 31 Dec 2003 07:58:36 -0600, Geoff Edmonson wrote > > the RF gain control was not working at all. I found a pinched wire that was > > grounded. This was the wire going to the cathode resistor of V-1. I fixed > > this, and even put a new pot in there for the RF Gain. It works BUT.. all > > you have to do is just barely turn it and it blanks out the front end. > > Could one of the cathode resistors have changed value, canceling out the > > work of the rf gain control? R-3 to V-1 or R8 to V-2? Or, possibly, C14 on > > V-1 or C18 on V-2? > > Just a silly-assed question, Ronnie - mainly because I don't remember... > but is there an AGC control switch on the front of the SX-28? It > should be ON. Without the AGC circuit being active, you could have > the same effect - any signal would send the front-end to saturation. > > Happy New Year! > 73 = Best Regards, > -Geoff/W5OMR > > -- > 7:56am up 2 days 14:23, 4 users, load average: 0.17, 0.65, 0.84 > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] another SX-28 question
well 24 hours of work and she is coming along nicely. The audio section is fine now. Sound graaat.. She is not working on the top two bands but we'll cross that bridge later. the RF gain control was not working at all. I found a pinched wire that was grounded. This was the wire going to the cathode resistor of V-1. I fixed this, and even put a new pot in there for the RF Gain. It works BUT.. all you have to do is just barely turn it and it blanks out the front end. Could one of the cathode resistors have changed value, canceling out the work of the rf gain control? R-3 to V-1 or R8 to V-2? Or, possibly, C14 on V-1 or C18 on V-2? looks like they will be tough to get to if that is the case. your ideas gentleman? your The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
RE: [AMRadio] SX-28 help
howdy Brett well I took out the 6L6's and put in 6V6's this morning. They run pretty hot but not glowing red or anything. I brought my 8 pin octal tube extender socket with me to work this morning so I can check all the voltages. I have a pretty nice s hop at work so that is where I'm working on the 28 since my boss is off until next monday LOL 73's Ronnie On Tue, 30 Dec 2003 09:13:45 -0500, Brett Gazdzinski wrote > Well, I would compare the two tube types, look at the > typical operating voltages of both tube types, voltages on > the plates and screens, bias voltage, resting current. > > Measure what you have in your receiver and compare. > > In some applications, they run the tubes at high resting > current for low distortion, but my SX17 has had the same > audio output tubes in it for years and years, and I don't think > they get very hot. > I forget what they are, 6V6 or 6L6 tubes, but they don't run > very hot. > > You can lower the screen voltage, or raise the bias, the RCA tube > manual should have the proper operating values for push pull > service, AB1 I think they run. > > > My SX17 (sold now) sure sounds nice into a big 3 way speaker. > Its supposed to be 12 watts or more I think, and has no problem > driving the big speaker with very nice fidelity, just as good > or better than the Marantz amp. > > All the SX17 needs to be a real nice AM station receiver is > one of those digital frequency displays that pick up > the LO signal and display the exact frequency you are tuned to. > > Fidelity is great, bandwidth choices are good for AM, wide is > quite wide, narrow is narrow enough under most crowded conditions. > > Sure looks like a real receiver, like the SX28, beautiful > backlit S meter with the Hallicrafters logo in it, big chrome > frequency dial, loads of knobs, etc. > > I have had the SX17 for over 5 years without a single problem > with it. > Very nice gear. > > Brett > N2DTS > > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of w5sum > > Sent: Monday, December 29, 2003 11:34 AM > > To: amradio@mailman.qth.net > > Subject: [AMRadio] SX-28 help > > > > > > Morning All > > > > well I have dived headlong into my SX-28 restoration. The > > first order of > > business was to try to get the wiring correct in the audio > > output stage. It > > had a replacement audio output transformer, and the wiring to > > the headphone > > jack was all wrong... end result was that there was NO audio > > available at the > > speaker jacks on back and bad audio with headphones. > > > > I had a parts unit here so I took the audio transformer out > > of it,and put it > > in the one I'm restoring. I wired the headphone jack up > > correctly, and the > > speaker jacks on back. I now have decent audio from the > > speaker terminals > > with the factory speaker, and so so audio using a 8ohm headset at the > > headphone jack. > > > > HOWEVER, the 6L6's ( someone subbed out the 6V6's ) run > > scalding hot.. I > > mean.. so hot you can smell them. I have changed EVERY > > component in the > > audio section around the output tubes, and the 6SC7. > > > > Anyone have any solutions to why these tubes are getting so hot? > > > > thanks in advance > > > > > > r > > > > The "AM" voice of Shreveport, Louisiana USA > > formerly WN5AIA and WB5AIA > > I got my Extra Class the old fashioned way... I earned it! > > ___ > > AMRadio mailing list > > AMRadio@mailman.qth.net > > http://mailman.qth.net/mailman/listinfo/amradio > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] SX-28 help
hi Vince man.. I really need Maine bad for my 75M AM WAS. Wonder if we could arrange a sked? Ronnie On Mon, 29 Dec 2003 21:00:55 +, Vince Wesa Werber wrote > Hi OM... > > When I did my last SX-28 I found a heating prblem in the audio > also... not outside of the norn really. be sure to check the bias > on those audio tubes... and the impedance of that replacement audio tranny... > > My last one had a replaced power tranny and all the voltages were off... > > Re-cap the machine... bypasses etc... and check all those screen > resistors... awww heck... check all the components... it is rather > old enit??? :-) > > these are fun radios and well worth the time... > 73 > vince > ka1iic > > On Monday 29 December 2003 04:34 pm, w5sum wrote: > > Morning All > > > > well I have dived headlong into my SX-28 restoration. The first order of > > business was to try to get the wiring correct in the audio output stage. It > > had a replacement audio output transformer, and the wiring to the headphone > > jack was all wrong... end result was that there was NO audio available at > > the speaker jacks on back and bad audio with headphones. > > > > I had a parts unit here so I took the audio transformer out of it,and put > > it in the one I'm restoring. I wired the headphone jack up correctly, and > > the speaker jacks on back. I now have decent audio from the speaker > > terminals with the factory speaker, and so so audio using a 8ohm headset at > > the headphone jack. > > > > HOWEVER, the 6L6's ( someone subbed out the 6V6's ) run scalding hot.. I > > mean.. so hot you can smell them. I have changed EVERY component in the > > audio section around the output tubes, and the 6SC7. > > > > Anyone have any solutions to why these tubes are getting so hot? > > > > thanks in advance > > > > > > r > > > > The "AM" voice of Shreveport, Louisiana USA > > formerly WN5AIA and WB5AIA > > I got my Extra Class the old fashioned way... I earned it! > > ___ > > AMRadio mailing list > > AMRadio@mailman.qth.net > > http://mailman.qth.net/mailman/listinfo/amradio > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] Thordarson Transformer Specs
anyone have the specs on a 26R19 Thordarson plate/filament transformer? The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] SX-28 help
Morning All well I have dived headlong into my SX-28 restoration. The first order of business was to try to get the wiring correct in the audio output stage. It had a replacement audio output transformer, and the wiring to the headphone jack was all wrong... end result was that there was NO audio available at the speaker jacks on back and bad audio with headphones. I had a parts unit here so I took the audio transformer out of it,and put it in the one I'm restoring. I wired the headphone jack up correctly, and the speaker jacks on back. I now have decent audio from the speaker terminals with the factory speaker, and so so audio using a 8ohm headset at the headphone jack. HOWEVER, the 6L6's ( someone subbed out the 6V6's ) run scalding hot.. I mean.. so hot you can smell them. I have changed EVERY component in the audio section around the output tubes, and the 6SC7. Anyone have any solutions to why these tubes are getting so hot? thanks in advance r The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] ceramic standoffs needed
on voice peaks and RF we're talking about here, god only knows what kind of voltage is really there. R On Sat, 27 Dec 2003 12:17:41 -0500, Gary Schafer wrote > Aren't those the loading caps? If so there is no where near that > kind of voltage there. Less than 600 volts p to p at 50 ohms. It is > the current that is the problem. > > 73 > Gary K4FMX > > [EMAIL PROTECTED] wrote: > > Sorry can't make it. Got a party to go to. These dang newbie and there > > Valiant's. Those caps gotta be rated at four times the voltage that's on the final > > minimum! > > 'gte > > > > > > --- StripMime Report -- processed MIME parts --- > > multipart/alternative > > text/plain (text body -- kept) > > text/html > > The reason this message is shown is because the post was in HTML > > or had an attachment. Attachments are not allowed. To learn how > > to post in Plain-Text go to: http://www.expita.com/nomime.html --- > > ___ > > AMRadio mailing list > > AMRadio@mailman.qth.net > > http://mailman.qth.net/mailman/listinfo/amradio > > > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] ceramic standoffs needed
Tony I have them, or rather I should say, I will have them, they are being shipped today. thanks a heap!! hey join us on 3885 at the stroke of midnite central time, on new years eve. We're going to have a Midnite MOdulator QSO PARTY!! No rules.. just fun 73's Ronnie On Fri, 26 Dec 2003 23:34:03 -0500, Anthony W. DePrato wrote > Ronnie: > If you do not find them i have some 1 inch stock of teflon rods i > can cut you a 6 in rod you will have to drill and tap. let me know > 73 Tony wa4jqs > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] ceramic standoffs needed
howdy y'all my impedence matcher project needs a pair fo 3" tall heavy ceramic stand off insulators to support a large variable capacitor. Must be 3" anyone have a PAIR of these beasts? Actually I could get by with 1 but would prefer a pair thanks in advance Ronnie The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] Transformer needed
hi Terry new or used is good 120-150 ma of current. I can't believe that I left that part out LOL Merry Christmas Ronnie On Tue, 23 Dec 2003 17:05:20 EST, Tbs50A wrote > Hey Ronnie, >Are you lookin' fer new or used and how much > plate current? Terry N3GTE > > --- StripMime Report -- processed MIME parts --- > multipart/alternative > text/plain (text body -- kept) > text/html > The reason this message is shown is because the post was in HTML > or had an attachment. Attachments are not allowed. To learn how > to post in Plain-Text go to: http://www.expita.com/nomime.html --- > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] Transformer needed
oh.. what kind of current does it have for the plate voltage? I need about 120 mills R On Tue, 23 Dec 2003 12:53:56 -0600, Geoff Edmonson wrote > I spewed my drink all over the monitor when on Tuesday 23 December > 2003 12:48, w5sum said (and I am -not- making this up!):: > > > I'm in need of a combined plate/filament tranny > > > > 750 or 800 vct > > 6.3V ct and 5v filament windings > > > > anyone have one of these beasts they will part with? > > > > thanks and Merry Christmas > > I've got one, Ronnie. I need a road trip. where do ya wanna meet? > > -- > 12:53pm up 3 days 0:31, 8 users, load average: 0.31, 0.22, 0.13 > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] Transformer needed
I'm in need of a combined plate/filament tranny 750 or 800 vct 6.3V ct and 5v filament windings anyone have one of these beasts they will part with? thanks and Merry Christmas Ronnie The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] SX28 parts needed
I need the dial lock mechanism and a AVC knob to complete my SX-28 I have a spare SX28 for parts, if anyone is in need of anything Ronnie The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] tubes needed
howdy y'all I am in need of a 6C10 and a 6EW6 anyone have these to spare? thanks Ronnie - W5SUM The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] Driving for treasures
I, too, have always enjoyed driving to pickup boatanchors. Many times I have met hams in parking lots, exchanged gear, exchanged money.. have always wondered what the police would think if they saw this happening LOL In south Louisiana.. it would make trouble for ya hehe R The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] tubes for swappin
I have the following tubes surplus to my needs here 3 5931 5 5933WA 6 7984 2 6AS7 1 6336 5 6080 3 PE930 6 2D21 I am in need of the following for my spares 6L6, 6V6, 5Y3, 5V4, 6AL5,6AQ5,6SJ7,6SK7,6K7 Ronnie The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] valiant problems
Tony well, I just looked in the notes on that valiant and what I installed were the large 6KV mica transmitting caps. I had to locate them whereever I could find room for them and route them to the switch. You'll have to do the same. Beware of putting 2KV, 2.5KV or 3KV mica's in there. I have blown a few of them in valiants. the 6KV will hand in there no matter what. In my rig, the 330pf SET had blown.. visible carbon burns on them and etc.. I changed it out with a 330pf 2.5KV mica and it lasted about a week. I changed it out with a 330pf set and it acted better but still somewhat squirrelly in its tuning on 75M. After closer inspection it was found that the 150pf set were carbon tracked too but on the BACKSIDE where you would not see it if you did not physically move the caps over so you could look LOL changed that set out, also with a 6KV mica and she has performed beautifully every since. Ronnie On Sat, 11 Oct 2003 22:41:09 -0400, Anthony W. DePrato wrote > > > >The "AM" voice of Shreveport, Louisiana USA > >formerly WN5AIA and WB5AIA > >I got my Extra Class the old fashioned way... I earned it! > >___ > Ronnie love the above line.. i did also.. > thanks ill put out a request for a set of them. guess ill try for > two of each as i have two of the killer transmitters 73 Tony > > Anthony W. DePrato WA4JQS > Since 1962 > WA4JQS / VP8BZL / VP8SSI / 3Y0PI > CQ DX Hall Of Fame # 35 > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] valiant problems
I would put out a request to any of the ham email groups you are a member of. You only need ONE 150PF 6KV and ONE 330 PF 6KV transmitting Mica. Or, the 3KV series will work real well too. In the mean time, let me go dig in the box and see what I have. failing that.. Surplus Sales of Nebraska has them in stock. Ronnie On Sat, 11 Oct 2003 20:24:29 -0400, Anthony W. DePrato wrote > Ronnie W5SUM: > I just reread your email about the 330pf and 150 pf > series/parallel silver mica's glad i did.. i have ordered two sets > of caps now that have got dumb and got another valiant last > Friday..figured i would do one then the other.. i found the silver > mica's at 1000v in mousers but i think ill go with your suggestion > and look for transmitting caps. (anyone have them out there.. before > i spend my xyl's car payment on them ?) just finished up one of my > SX 99 receivers this week and put the other one on the bench while i > am waiting for parts. just about have it recapped also. well i > needed to clean one of the benches off for the valiant so i got the > Zenith D-116 finished up today and back in the case. got a two > wheeler and dragged the old girl out to the shop.. set up the A > frame and put her on the bench hi hi.. while i was recovering i was > thinking what receiver i wanted to use with the second Valiant . saw > an SX 101 A setting under the bench nice clean unit.. power it up > worked great.. but has 28 BB's in her.. so set her on the other > bench and will start recapping her this week . Je no wonder I > never have any time to get on the air.. > > If you come up with any more great ideals while i have the > transmitter on the bench let me know.. BTW thinking about buying a > small crane to use around here .. wonder where i can find some HO > gage track. 73 Tony wa4jqs > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] Valiant problems
ah a glutton for pain eh? LOL... man those valiants will put you to the test om !!! get it working and put that beast on the air... 3880 or 3885 any morning 4am - 6am central.. someone is always there!! 73's Ronnie On Mon, 06 Oct 2003 14:02:54 -0500, Anthony W. DePrato wrote > Well i guess i just love pain and trouble hi. picked up another > valiant friday.. it is working for now .. going to move the old one > to the bench and start recapping. have about 1/2 the ordered caps in > not so figured i would get started.. got to order the silver mic's > next. thanks W5SUM for the info > > 73 Tony wa4jqs > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] valiant problems
I just traded my valiant off LOL On Fri, 26 Sep 2003 18:35:55 -0600, Jim Wilhite wrote > You got that right Ronnie Valiants aren't operator > friendly..What's this about being better than a DX 100. I > have a DX 100 I will put up against your Valiant any day. Heh, > Heh. Where's the shoot out??? > > 72 (QRP for 73) > > Jim > de W5JO > > - Original Message - > From: "w5sum" <[EMAIL PROTECTED]> > To: > Sent: Friday, September 26, 2003 3:36 PM > Subject: Re: [AMRadio] valiant problems > > >> Valianta are not operator freindly. I love them, they are good > radio's but if > > you don't want to be working on a radio a lot.. a valiant is > not a good rig > > to have. Its not as reliable as a Ranger. But its a damned > sight better than > > a DX100 or Apache LOL > > > > good luck with your rig and holler at me if I can help in any > way. > > > > Ronnie > > > > On Fri, 26 Sep 2003 13:35:16 -0500, Anthony W. DePrato wrote > > > hi Ronnie: > > > would love to get your ideals on the Valiant. got my caps > ordered > > > today.. only $65.00 worth to replace all the eletro's and > .005 > > > disks. 40 of those . wanted to do it right when i put it on > the > > > bench.. btw i may have another one next month.. if things > work out. > > > 73 Tony wa4jqs > > > > > > ___ > > > AMRadio mailing list > > > AMRadio@mailman.qth.net > > > http://mailman.qth.net/mailman/listinfo/amradio > > > > > > > > The "AM" voice of Shreveport, Louisiana USA > > formerly WN5AIA and WB5AIA > > I got my Extra Class the old fashioned way... I earned it! > > ___ > > AMRadio mailing list > > AMRadio@mailman.qth.net > > http://mailman.qth.net/mailman/listinfo/amradio > > > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] valiant problems
well I don't have all of my notes right here in front of me but let me tell you what I can remember right off the top of my head. #1, your doing the right t hing shotgunning all of the caps, regardless if they are paper bypasses, ceramic disks, or electrolytics. Thats an important first step. Now.. look on your schematic at the output section. They use series/parallel silver mica's to come up with the output loading caps. These are notorious for going bad on you. If they don't just fail right off, th ey can do squirrely things to your output loading, cause rf spurs in area's where you don't want them, and, if they fail, can actually take out the rf choke that is in the B+ line and etc. Those damn things are receiving silver mica's rated 500v each. Barely adequate, if that. Why Johnson did this I will never know. One of the series/parallel combo's adds up to 330pf and one adds up to 150pf ( I think ). Replace each of these with a SINGLE 3000V or 6000V transmitting mica. You can get them from Surplus Sales in Nebraska. They are not cheap, but what price for replacing a lot of other stuff that can be burned up if those originals fail? You will have a small difficulty finding room for these big caps, but you can do it. I did. Also, there is another little cap that is multi section in there, total capacitance is 1200pf. I have never had one fail but it could. Just look at it real good. Okay.. the VFO.. its a bitch to get into BUT.. you want to pry it open and remove that bastard 18K 2 watt resistor. You want to add a small solder stip somewhere under the chassis, right beneath the VFO and tie a new 18K 5 watt ceramic resistor, across the solder strip, with one end of the resistor soldered to the ground lug that attaches the solder strip to the chassis. Then run a wire from the other end of the new 18K resistor ( the end above ground ) to the point inside the VFO where the original resistor was hooked up. That factory resistor is well known for failure and when it goes, it eats up all kinds of components in the VFO. Its well worth the trouble to move it out of there, plus, it takes some heat out of the VFO. Tubes. don't put 6146A's, B's or W's in your Valiant. It was designed around plane jane 6146's. You can still get them. I have the name of a fellow at home somewhere, down in florida that will sell you amperex 6146's for a very good price, brand new in the boxes. The modulation section especially likes them, and the RF will be much easier to neutralize with these. Examine the bandswitch real well, as well as the switch that switches capacitance in and out of the output loading. Look for carbon traces. If they are there, on the ceramic, scrub them off with a pencil eraser IF you can get to them. If not, get it off the best you can. And WHILE you have the beast out of its cabinet, clean all switches and controls with De-Oxit. after you get everthing changed out, neutralize the rig, and set the idling modulator current as per specs in the manual. DON'T PUT THE SCREWS BACK IN THE CABINET UNTIL YOU HAVE RUN IT A WEEK OR TWO.. LOL man.. its a bitch to pry it out of that cabinet when all the screws are in it, and you can visually see fire inside ( this happened to me when a modulation transformer shorted to ground ). Valianta are not operator freindly. I love them, they are good radio's but if you don't want to be working on a radio a lot.. a valiant is not a good rig to have. Its not as reliable as a Ranger. But its a damned sight better than a DX100 or Apache LOL good luck with your rig and holler at me if I can help in any way. Ronnie On Fri, 26 Sep 2003 13:35:16 -0500, Anthony W. DePrato wrote > hi Ronnie: > would love to get your ideals on the Valiant. got my caps ordered > today.. only $65.00 worth to replace all the eletro's and .005 > disks. 40 of those . wanted to do it right when i put it on the > bench.. btw i may have another one next month.. if things work out. > 73 Tony wa4jqs > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
Re: [AMRadio] valiant problems
hi there Anthony I have put a LOT of time in on those rigs. First, the culprit putting the AC on the chassis is not going to be your Filter caps, THOUGH if your hearing hum on your audio, they need to be replaced. Check all of those damned ceramic disks that go fromthe A/C input to the chassis. These are usually around some small copper inductors. I don't have my manual so I can't tell you what the schematic designation is. Your Modulation current pegging will be another problem I'm afraid. Maybe not. Check those mod tubes real good. I have some other suggestions, while you have it out of the case. If your interested. Ronnie On Tue, 23 Sep 2003 20:05:06 -0400, Anthony W. DePrato wrote > Well after setting for over a year . i wanted to fire the valiant up > last weekend.. everything went great till i keyed the relay.. > HUMMM. 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 HU... 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 > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
[AMRadio] switch help
howdy Mike run and ger your mid 60's copy of the arrl handbook. Look up the amplifier project that yields seperate 813 amp for each band. You've seen it before I'm sure, at least a trillion times LOL okay.. I'm not really following thier RF deck completely, but I'm using the metering and screen/grid bias - control schematics. If you look where they list the parts, s-1 is shown to be a 2 pole 3 position rotary switch, shorting type, and it controls the screen metering. In one position you look at V-1, the middle position is BOTH tubes, and the third position is V-2. WHY DOES THAT HAVE TO BE A SHORTING SWITCH I think it is mislabled myself. S-2 is shown to be a 2 pole 3 position, rotary switch, non-shorting. Looking at the schematic this should be a THREE POLE switch. So possibly another mistake? take a gander and let me know what you think. If NEITHER one has to be shorting, I got 'em covered here. Ronnie
