Re: [AMRadio] Octal Sockets.... more Ranger stuff
Hey Guys, My gen one Ranger has a octal socket for the two rocks accessible from the front panel (under the cigarette lighter plug). My guess is that, that part is OK. 73, Jack WA9NQW On Oct 22, 2006, at 1:44 PM, Rick Brashear wrote: Well, the pictures answered several questions I had. It has definitely been used with a modulator at one time or another since it seems to have all the transformers and components. I appears the modulation transformer is completely disconnected from the modulator tubes. I see you were able to get pin 8 in the two sockets, great. I can't imagine why the crystal socket was removed and a modulator tube socket employed for the crystal. Maybe the original crystal socket broke or something. If you haven't found a crystal socket yet I can send one along with the CD tomorrow. It's obvious you are going to have to rebuild the modulator and crystal switch/socket sections. Fortunately, there are no obscure parts or super hard wiring considerations in either section. On the modulation transformer the brown wire goes to pin 3 of the socket of V10, the one closest to the outside edge of the chassis. The blue wire goes to pin 3 of V9, the other modulator tube socket. The red wire attaches to the terminal strip on lug 1 (so we'll call it) closest to V9, there will, or should be, a black wire already attached to it. Sometimes this configuration gets out of phase and you get extremely distorted or extremely low modulation. If this happens simply switch the two wires going to the plates (pin 3) of the modulator tubes. Beware of the electrolytic you are holding in the first picture, it is likely defective and can be replaced with a couple of 10 mfd or higher at 150 vdc or more. Rick Jack Schmidling wrote: I put 3 pics of the most serious problem areas on my web site: http://schmidling.com/r_mod.jpgIs a view of the bottom of the mod tube sockets http://schmidling.com/r_mod1.jpg Is the way the top looked before I removed the xtal and cap. I just stuck them back in for the pic. http://schmidling.com/r_xtal.jpg Is what the crystal socket area looks like. Unfortunately, without 3-D, you can't see all the dangling wires. I guess that is where the pict drawings become useful. I am also trying to figure out how to fool my camera. Seems like I lose control when the flash is used no matter what manual setting I force. It just supplies the light it thinks it needs and always overexposes close ups. It's a digital Rebel and I suspect it is smart enough but I haven't figured it out yet. js __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Manuals FREE
Hi Bob, I could use the Gonset Com IV manual. Tnx & 73, Jack WA9NQW On Dec 13, 2006, at 1:19 PM, Bob Peters wrote: I have the following manuals that if anyone wants they can have free or if you want all of them That is even better SX101 Mark III Original Clegg 22er Manual Man Gonset Com IV Original 2 meter Panoramic PCA-2 Scope Original WRL Globe Scout Model 66 Original National NC183 D/ 183 MR Bound Copy National NC300 W/Service Bulletins Copy Halicrafters Keyer HA-1 Original RME 45 Bound Copy Heath Apachie Original no cover Hamarlund HQ-140XW7FG National NC183D W7FG Hallicrafters HT-37 Original Rebound I would prefer one person take all and what you do with them is up to you...Freight for all Would be $10.00 Lots of good stuff there...Makes me sick to see what gear I have had in the past...HI... Very Best 73's Bob W1PE The Voice of Mesquite www.w1pe.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] low band am
Hey Charlie, Or run QRO with a Ranger . You guys still running the 2 meter AM get together on 144.400? 73, Jack WA9NQW On Mar 13, 2007, at 7:31 PM, [EMAIL PROTECTED] wrote: Hello Steve: Thanks for your comments re low power AM. Yes, I have heard that the folks in India make do with what they can and there is no reason why not. I am convinced that low power "regional AM" could be fun, less expensive and less likely to cause anyone a problem. I fondly remember operating 5-10 Watts on 160, 75 and 10 meters with a mass of heterodynes everywhere that I used to call QRM but now I realize that it was just fellow hams working each other. Hope to work you sometime. Vy 73, Charlie, K0NG __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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.
Re: [AMRadio] Ashtabula Bill Thong FS
Very Cool. Jack WA9nqw On Aug 14, 2007, at 7:42 PM, Jim Candela wrote: Here is a must buy: http://www.cafepress.com/amradio3.120828636 ;-> Jim JKO __ AMRadio mailing list 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. __ AMRadio mailing list 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.
Re: [AMRadio] TUBES NEEDED
Hi Bob, Check the modulator again. Should be a pair of 6BQ6s. You will enjoy the rig, its a fun radio. 73, Jack On Dec 1, 2007, at 10:01 AM, Bob Peters wrote: Hi All...I need some 6DQ5 tubes.I just picked up a Gonset G76 and it has 1 in the final and Two in the modulator...Would like to find at least 3. Thanks guys. Very Best 73's Bob W1PE The Voice of Mesquite www.w1pe.com "Money is only temporary, but radios are forever" - Jim Little aka "the old dog"/K5BAI __ Our Main Website: http://www.amfone.net AMRadio mailing list 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 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.
Re: [AMRadio] TUBES NEEDED
Hi Bob, That is exactly backwards of what my manual shows. 6DQ5 Final, 6DQ6 modulators. I checked it out and the 6BQ6 and 6DQ6 look pretty similar and have the same pinouts. Mine was subbed with the 6BQ6s. I also found a skizmatic showing a 676G as a final. What that is I have no clue. It appears that there were variations. 73, Jack On Dec 1, 2007, at 11:08 AM, Bob Peters wrote: Jack..The schematic calls for 6DQ5's in the mod and 6DQ6 as the final..That was what is in the rig as well... Could this be a different variant XCVR... Bob W1PE -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Sent: Saturday, December 01, 2007 10:25 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] TUBES NEEDED Hi Bob, Check the modulator again. Should be a pair of 6BQ6s. You will enjoy the rig, its a fun radio. 73, Jack On Dec 1, 2007, at 10:01 AM, Bob Peters wrote: Hi All...I need some 6DQ5 tubes.I just picked up a Gonset G76 and it has 1 in the final and Two in the modulator...Would like to find at least 3. Thanks guys. Very Best 73's Bob W1PE The Voice of Mesquite www.w1pe.com "Money is only temporary, but radios are forever" - Jim Little aka "the old dog"/K5BAI __ Our Main Website: http://www.amfone.net AMRadio mailing list 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 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 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 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.
Re: [AMRadio] Sp-600 JX-11 Diversity?
On Feb 19, 2008, at 2:00 PM, [EMAIL PROTECTED] wrote: Hello John/List: Sounds like you are having fun with that JX-11. I never got to work on the JX-11 as I recall but did work on JX-17 thru JX-21. The diversity mods you mention sounds like the ones installed in the JX-17. We used to get kits with stick on labels, new controls/functions, red knobs etc. hardest part of the mods were getting the rcvrs out of the rack!! I cant remember the rack mounted "combiner/switch that was installed between 2 receivers but I do remember it functioned on AVC levels. As I recall, most of the mod-kits were put up by Northern Radio. On some installations, the "master external oscillator was by Northern Radio also. 53 years back seems to cloud my momory of what was second nature then. Have fun !! 73 K0NG,Charlie, ex-USAF KGF, Geiger Field SP-600,s combiners, Wilcox 96D transmitters, 3 wire rhombics for diversity. __ 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.
Re: [AMRadio] 40 meter AM freq
Hey Dan, What is going on out in Lincoln? We just got our first snow here in cheeseland. 73, jack On Nov 25, 2008, at 7:35 AM, Daniel Wright wrote: I was enjoying listening to this QSO last evening and both stations were very strong into Lincoln, Nebraska. I shudda warmed up the G76, but all I had "on" at the time was a TS-850. Nice signals, nice conversation.good job guys, I hope to be QRV there on 7190 soon! 73 de Dan -- WAØJRD .. Hey everyone. I don't mind the 7190 or the 7290/7295 too much except for the QRM! I was having a lovely QSO with Bernie W8RPW this afternoon on 7190 and the sidebanders suddenly appeared out of nowhere! We were sorta discussing how the extra portion might be a nice option. Let's face it fellas, it's NOT DIFFICULT to upgrade to Extra class nowadays. Maybe some activity down there will provide some incentive for Generals to upgrade. It sure is way less crowded! Just a thought! de KX5JT __ 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.
Re: [AMRadio] EF Johnson Knobs
Hi Joe, Find a pizza place that delivers. Many use a little plastic "table" to keep the pizza and the box separated. The "table" legs work well when cut off to the appropriate length. Eating the pizza is optional. 73, Jack On Jan 12, 2009, at 7:49 PM, Joe Dube wrote: Does anyone out there know where I can get some of the white pointer indicators that go into the knobs on the EF Johnson transmitters?? If anyone has any ideas please reply to me here or by my email. Any suggestion would be greatly appriciated. Joe K4TR No virus found in this outgoing message. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.10.6/1888 - Release Date: 1/12/2009 7:04 AM __ 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 amradio-requ...@mailman.qth.net 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 amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] A special day today
According to Wiki, the holiday did not start till 1986. But an interesting story non the less. I was first bit in a electronics shop class. I was checking out a power supply I had built for a small 6L6 transmitter. Got bit by a lytic when it was off. (oops did I forget a bleeder resister) I cleverly reached in and got it again, thinking my first go around had discharged the cap. My classmates found it amusing. 73, jack On Jan 19, 2009, at 4:07 PM, robertchar...@att.net wrote: > You are a jewel for sharing your story with us. Fortunately for me, > I have never experienced anything other then a shock across the CW > Key contactsand that was bad enough for me back in the late > 60's-70's. > -- Original message from sbjohns...@aol.com: > -- > > > > > > > > It is indeed a special day today. I'm working on the restoration > of my > > old WRL Galaxy 300 SSB transceiver - my first SSB rig I bought as > a new > > General lo those many years ago. I had to pull use all my savings, > > plus cash gifts from my parents and grandmother to scrape enough > money > > to buy it mail-order from Associated Radio in Kansas City. I think > it > > cost $229. > > > > This is the rig that put me in the hospital on Martin Luther King > Day > > 1977 or 1978. I was 13-14 years old, fooling around one evening in > my > > room, trying to determine why there was a tube shield on the > Galaxy's > > 6BZ6 RF amp tube. It is located right behind the finals in the PA > > compartment. > > > > At one point I got very careless. With the transceiver turned on > > (bad), in fact transmitting a full-power carrier (very bad), I > lifted > > the lid and reached back in with my right hand to remove the 6BZ6's > > shield. Trouble is, to get to it I reached over the two 6HF5 > finals and > > their plate caps with about 900 volts DC, plus a couple hundred > watts > > of RF. My wrist touched the plate caps at the same time my fingers > > reached the tube shield, and the shocking and the burning commenced. > > My hand drew up in a fist, making it seemingly impossible to pull it > > back out. With the pain of the electric shock and RF burns I > couldn't > > get my hand out! Fortunately I was only using one hand for this > > madness, and I ultimately pushed myself away with my other hand on > the > > wooden desk. This also meant that the current had only flowed > through > > my hand and arm, not across my chest (very good). > > > > I had some pretty serious and painful burns on my hand and forearm. > > Clutching my wounded limb, I sat on my bed considering my options. I > > had a VERY BIG CONCERN that if I told my parents what had happened > > they'd stop my ham hobby dead. I was also very embarrassed to have > > hurt myself in such a dumb way. But I was also hurting pretty bad, > and > > worried about the side-effects of a strong shock, so I concluded > to be > > up-front about it. Not sure now how I would have hidden the injuries > > anyway. now that I think about it thirty years later. > > > > They handled it very well, and took me to the hospital emergency > room. > > The doctor did not understand the situation very well and was > checking > > my feet for burns, worried about my heart, etc - and he demanded > that I > > be kept overnight. I was admitted and put into a bed in a room with > > eight patients. > > > > All night long, every few minutes one or another of these poor souls > > needed a nurse for something and would start calling out, ringing > > bells, moaning and crying. The nurse would finally enter, > switching on > > the gigantic bank of fluorescent lights that lit the whole room like > > the surface of the sun. Click... zz.. , snap, snap, snap as the > > lights fired individually and finally humm they were on and I > was > > blinded by the light. No sleep for me, and I spent part of the the > > next day in the hospital wasting a school holiday - Martin Luther > King > > Day. > > > > My parents never said a word in judgment of my foolishness or > against > > ham radio because of this accident. And I was able to "milk" my > > injury to get me out of gym class for several months (very good). > > > > "Before" photos of the Galaxy 300 at > > > > http://www.flickr.com/photos/34505...@n02/sets/72157612756003726/ > > > > Steve WD8DAS > > > > sbjohns...@aol.com > > http://www.wd8das.net/ > >
Re: [AMRadio] Windom Antenna [SPAM : scl = 4]
Hey Charlie!!! Merry Christmas, Hope you all are well and kicking out in cornland. Down in the basement here with the fireplace going (gas, not a walk out basement like my place out there) Listening to the HRO-50 on the broadcast band with a 10 foot wirenext year a bigger skyhook, hi. Got a local fest on Jan 8, hope wx co-operates. Whats going on at Telex? 73, jack On Monday, December 27, 2004, at 07:56 PM, [EMAIL PROTECTED] wrote: Wouldn't it be real simple to use a Line Flattner/"Antenna Tuner" to the single wire transmission line, fed against good ground, to a Windom that is close to resonant on most of the bands, get on the air and enjoy its properties?? 73 , K0NG . Quoting Geoff/W5OMR <[EMAIL PROTECTED]>: In QST magazine for September 1929 the original Windom Antenna article starts on page 19. It clearly shows that it is exactly resonant on all of it's design bands, so long as there is an harmonic relationship. 80-40-20-10 etc. There are diagrams included which show how this is determined with an RF ammeter and a rolling trolley after which very precise and repeatable formulas were derived. Of course this is the single wire fed version. The later 300 Ohm job is merely wishful thinking.The length in feet is always 468, divided by desired frequency in Kc. For the lowest desired band. The tap is always feet times 25 divided by 180. I might add that antennas put up as temporary during this nasty winter weather last 20 to 30 times longer than summer installed permanent antennas. happy antenna experimenting. 73, K4XM, Mike. So, in order for this to work, you have to decide what frequency you're going to operate on, on the HIGHEST frequency the antenna will cover. ie: 29MC /2 = 14.5, 7.25, 3.625, 18.125Mc. that being the case, then L = 468/f(L) L = 468/18.125 L = 258.20689655172413793103448275862 Now, you said that the 'tap is always feet times 25 divided by 180' T = 258.207ft * 25 / 180 T = 6455.17 / 180 T = 35.862068965517241379310344827586 Single wire feeding it? Fed against Ground? Doesn't the single feed-line then become part of the radiating antenna? Even if someone were to take, say the output of a link and feed it directly to the open wire feed-line, the open wire line would have to go all the way to the feed point of the antenna, wouldn't it? I'm sorry if I'm seeming a little dense, but I can't get unwrapped from the 'single wire fed version' of this antenna. Open wire output from the link has *2* wires. I can see attaching them to some open wire line, and feeding this Wyndom antenna at 1.8125, and having the antenna resonant on 3.6250, 7.250, 14.5 (oops - can't operate there) and 29Mc, but I simply fail to understand how one wire is going to feed an antenna thas has two posts to connect to. Certainly has me thinking, though. Now, if I could just come up with land that had 300' (for guy supports on both sides) I'll have to work CW on 3.6250, forget about 20m and enjoy a multi-wavelength antenna on 10m (when the band is open). Pardon the sarcasm ;-) Seriously, here. Surely, there must be something I'm missing, to be able to use this antenna on all bands, with acceptable VSWR. 'Splain it to me, please. Happy New Year 73 = Best Regards, -Geoff/W5OMR __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] 51J3 or 75A3?
Hi Ken & the Group, Would you like to share your experiences with the SX-62? I picked up a 62A at Greyslake a few years ago, took the cabinet off and looked her over. Appears pretty virgin, I brought it up an a variac and it plays after a fashion. FM kinda distorted and weak. Higher freqs need help as well. I have not jumped in yet, but I got a couple of big sacks of orange drops for it and its sister SP-600 thats on the shelf in the que. Tnx & 73, Jack WA9NQW On Mar 6, 2006, at 5:18 PM, kenw2dtc wrote: I restored an SX-62 (caps and resistors) and I agree on the great audio ! FM included. 73, Ken W2DTC -- If we are talking about old radios that sound from good to real good, what about the SX-42 and SX-62? Heck, you can listen to FM, too. 73, Barrie, W7ALW __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] Gin Pole for folding tower question - OT
Hi Brian, Your may want to consider what Hy-Gain (before MFJ) did. Run a chuck of cable at a 45 down the back side of your pipe into an earth anchor or other suitable support. The one I have works great. 73, Jack WA9NQW On May 11, 2006, at 1:58 PM, Rick Brashear wrote: My personal opinion is it will not withstand the first half of the lift. I had a similar situation and it did not work. You might consider using "drill stem". Rick Brian Sherrod wrote: Sort of off topic, however I know there are some really smart guys on here that may know the answer to this; I've got a Rohn bx48 (48' light duty tower) that I would like to be able to fold over/up for any maintenance. It will have a Ham IV rotor/3 el. tri-bander and dipole pulley at the top. I plan to mount in the concrete base a 25' steel pipe 4 1/2" diameter with 1/4" walls directly behind the tower for raising and lowering to tower. The pipe will be 20 feet above the ground level with 5 feet embedded in the concrete tower substructure. It will have a pulley at the top of the pipe and a hand crank at about 4 feet, with steel cable attached to the tower at the 20 foot level. Question is; will 1/4" walled 4 1/2" steel pipe be able to withstand the foot lbs. required to raise and lower this tower below the 45 degree mark without buckling? Seems I can not find any pipe this size with larger wall diameter around here. I could guy the pipe in the opposite direction if needed... Any mechanical engineers out there know the answer?? Thanks, Brian / w5ami __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] Phone band expansion
Bob Maser wrote: I am in the Tampa area. The reason I sold my 20V2 and 20V3 was once you work the 30 or 40 stations that seem to hang out on 3885, you're done. Done with what? You have made 40 new friends. I personally think that is worth a lot more than a zillion sig reports from sig report collectors. Jack NR9Q -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Phone band expansion
Bob Maser wrote: Yeah, but I found that talking about how great AM is gets old after a while. Conversations are what YOU make of them. If you let others control the conversation, you get what you deserve but I don't how this is unique to AM. I experienced AM first hand as I became a ham in 1956. 1955 here > Now that SSB is the mode of choice for most hams, one gets used to VOX operation and the lock and talk becomes tedious at best. I never cared for vox but the lock and talk is a function of and controlled by fingers and not the modulation type and I agree it is very tedious. I wonder why this is so habitual with AMers. I suppose it goes back to the primitive days when one (at least I did) had to throw several switches and turn up/down the volume for each transmission. Seems like it's just a matter of retraining. I find that when I get on AM(I still have a pristine Valiant and HRO-60), a group gets together and by the time that it gets back around, 20-30 minutes have expired. This is not uncommon on SSB groups. > But I have found that it is nostalgia that attracts me to AM and nostalgia is satisfied by small bites(for me at least). I think what attracts me is the satisfaction of opening up a piece of gear and understanding what every part in it is and what for. I ponder electrons being sucked up by the plate and my voice controlling the flow. I gag when I open my rice box. If AM is getting so popular, why aren't there any manufacturers producing any equipment? No one would want it as it would be just another rice box with no nostalgic appeal. After all, it really is not a very practical way to communicate. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Phone band expansion
Bob Maser wrote: On that subject, I can't understand why the Advanced hams don't go down and pass the Extra written exam, especially since the code requirements have been eliminated Why bother? It is my understanding that soon all Advanced operators will be automatically upgraded to Extra. The real question is what is the point of Extra Class? Why not just downgrade us to Advanced? The whole program is totally stupid these days. As with all hobbies, this one thrives on magazines, advertising, equipment sales and job programs for promoters. The best interests of the hobbiest are not a very high priority. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] TS430 as VFO
Is there any reason why one could/should not use a rice box as a vfo on a simple rig like the Knight T60 or any other for that matter. Assuming we get the output down to an appropriate level, it would seem like a neat way doing things. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] TS430 as VFO
[EMAIL PROTECTED] wrote: A better > way is to use the "Transverter" jack (socket) on the back of the 430. Guess I had better get out the manual. Have no clue what a transverter is. Good luck and be sure you are in CW mode (no Mics!!) How bout AM with the audio turned all the way down? CW requires a key closure. I am getting brain cramps trying to sort out the antenna switching. Somehow the output has to go to the VFO input and the ant has to got to the RF connector or the transmitter out put. Maybe the transverter output solves this problem? I am picking up a Knight T60 on Monday and I don't have any xtals and I thought this might be an easy way around. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] TS430 as VFO on a KNIGHT T60
John Coleman ARS WA5BXO wrote: As for the T60, I'm not saying "don't do it". You will want to make your on observations for the experience. But, the TS430, when operated properly on AM, will get you better signal and audio reports and keep your band neighbors friendly. Thanks for the comments. My thoughts on an advantage of the T60 is that, as it has controlled/suppressed carrier, the idle power is a lot less than the TS430. As a consequence, I could drive a linear (SB200) a bit harder and get more power out of it than when using the 430. When running the 430 at about 15 watts, and a plate current of 150 ma on the amp, the plates get redder than I like. Seems like I should be able to increase the input significantly with the T60 before the plates got to the same temp. Is this correct reasoning? I think I will just get some xtals for the T60 as I am getting a Ranger soon. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] TS430 as VFO on a KNIGHT T60
Jim Candela wrote: I am going to state here as my opinion that with linear AM you should monitor the RF output with a scope, and use the Trapezoid pattern when optimizing the linear controls, drive level, and audio level. I have one set up but can't figure out a convenient way to get at an audio sig for the x axis from the TS430. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Phone band expansion
Not sure where the archives are for this group but I believe someone here is selling xtals. I need one for the AM window ASAP. Please contact me via return email. Thanks Jack NR9Q -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Viking Ranger
I just bought a Ranger but the manual does not agree with the hardware. How can I tell if I have a Ranger or a Ranger II? Mine has a deck with tubes and a pot mounted above the function switch. No such deck exists in the pics in the manual. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Viking Ranger
Peter Markavage wrote: And three is called Ranger II and includes 6 meters and no 11 meters. 1614's not used in Ranger II. Mine is gray, has 11 meters and the deck. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Octal Sockets.... more Ranger stuff
My new Ranger gets stranger by the minute. Inspecting the modulator section, not only are the tubes missing but the cathode pin (8) has never been soldered to. As far as I can tell,it should be connected to 8 on the other socket. Furthermore, two of the pins on this socket are missing and they are not unused pins. The sockets are riveted in so installing a new one would be a pain to say the least. Question: can new pins be inserted into such a socket to repair it? If so, where would one get replacement pins? Thanks, js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Octal Sockets.... more Ranger stuff
Jim Wilhite wrote: Just takes a little work. There is a tang that holds the pins in place. Just straighten it to get the lock past the shoulder and push the pin out with a tube or sharp pointed pick. Do you pull out from the bottom or push up and pull from the top? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Octal Sockets.... more Ranger stuff
Jim Wilhite wrote: Jack the end that you solder to is the part that slides up through to the top of the socket. The little locking tab will be right at the base of the bottom. The contact that the tube pins slide into come up. Thanks. No problem... just gave it a bit of a twist and it pushed right up. Unfortunately, I need that one for the cathode but it proves that replacing pins is a lot easier than replacing the socket. Now the question is where do I get another socket with removable pins? I also need a complete socket for the crystal holder. Anyone out there have such critters and willing to part for a price or otherwise? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Octal Sockets.... more Ranger stuff
I put 3 pics of the most serious problem areas on my web site: http://schmidling.com/r_mod.jpgIs a view of the bottom of the mod tube sockets http://schmidling.com/r_mod1.jpg Is the way the top looked before I removed the xtal and cap. I just stuck them back in for the pic. http://schmidling.com/r_xtal.jpg Is what the crystal socket area looks like. Unfortunately, without 3-D, you can't see all the dangling wires. I guess that is where the pict drawings become useful. I am also trying to figure out how to fool my camera. Seems like I lose control when the flash is used no matter what manual setting I force. It just supplies the light it thinks it needs and always overexposes close ups. It's a digital Rebel and I suspect it is smart enough but I haven't figured it out yet. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Octal Sockets.... more Ranger stuff
Rick Brashear wrote: I appears the modulation transformer is completely disconnected from the modulator tubes. One end is soldered to one tube but the other is just floating in the air. I see you were able to get pin 8 in the two sockets, great. Actually, pin 8 was there but the fact that it looks like nothing was ever soldered to it on one of them is the mystery. There are two pins missing from one of the sockets and they are grid and/or plate but I don't recall. If you haven't found a crystal socket yet I can send one along with the CD tomorrow. What I need is a complete octal for the xtal and one that I can salvage two pins from. But if off the shelf sockets can be cannibalized, I can buy them but I doubt it. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Octal Sockets.... more Ranger stuff
Rick Brashear wrote: The manuals are sending and I think I have all the sockets you'll need. I will give it a try but I doubt it will go for 8 M without crashing. I forgot to suggest that you break it up into smaller pieces. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Octal Sockets.... more Ranger stuff
[EMAIL PROTECTED] wrote: Hey Jack et al: I think the original owner was a CW operator and intentionally removed the modulator capability so no one would run AM and ruin the rig. Or... had a thing about restorers and tried to make sure it couldn't be. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Octal Sockets.... more Ranger stuff
Larry Taft wrote: Run any tests on the iron to check for shorts or opens? Maybe hook some B+ through a resistor to be sure no arcing Working on it. Checked the audio xformer, two chokes and started on the power xformer. All ok so far. Rick talked me into chucking the solid state and putting the tubes back in. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Ranger stuff
Now I have a mystery. I am pulling out the solid state mod in the power supply and putting tubes back in. The mystery is that there are 13 wires coming out of the power xformer and only 11 according to the manual. After removing all the junk, all the voltages are correct. The problem is that the HV wires going to the plates of rectifier are not red but yellow with red stripes. The red wires seem to be the extra ones and seem to go to the power/mode switch but I can not say for sure. They come down from the xformer, are neatly laced into a bundle, travel to the front, up a hole and into the switch or key deck. I haven't a clue what they are for and do not agree with either of the manuals I have. Anyone out there have any clues? -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger stuff
Brian Carling wrote: Jack - the typical, normal HV winding of a plate transformer consists of this: RED/YELLOW = center tap. Problem is, this apparently isn't normal. The red leads go up to the function switch. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger stuff
Brian Carling wrote: Jack the ONLY thing from a Ranger power transformer that should go to the function switch, is the PRIMARY wiring, which should be BLACK wires. Turns out, it's not the switch but pins 1 and 5 of the 6AL5 in the keyer control. Red is for the high voltage secondary. It very much sounds like someone has mis-wired this transmitter. It is beginning to look like they changed the xformer when the keyer control was added. The construction notes call these "brown" leads but they look red to me. In any case, this means there are no red leads coming out of the xformer and the hv leads are yellow with red. Do you have a schematic? Here it is if you need it for a free download. It's the last page of the manual. Not one with the keyer deck that is legible. I will take a look at the one in your link. The center tap which is red and yellow striped is supposed to go to ground. That is correct but the hv leads are yellow with red stripes. Confusing but reality. If those red wires are connected to the function switch that is a SERIOUS error. DO not turn it on like that! I fired it up in careful steps and the HV AC is where it is supposed to be so we must have a change without supporting docs. Each one of them has about 750 to 800V AC relative to ground (red/yellow) and a total of 1500V AC between the two reds. I didn't get that much... seems more like 1000 across the two but I had a light bulb in series with the primary for current limiting and this could have reduced the voltage. The light bulb was Rick's idea and eminently clever, I think. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Tranny
[EMAIL PROTECTED] wrote: Guess it's time to ask what the #'s are on that tranny. Hopefully it might be an identifiable mfg. If the light bulb was barely lit then you might have close to the correct reading. Check the heater voltage. The manual should have the original part # for comparison. Heater voltages are about correct. Never occurred to me to check the model number but probably because there is none visible. I will check it out now. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Tranny
Jack Schmidling wrote: Never occurred to me to check the model number but probably because there is none visible. I will check it out now. Turns out there are numbers stamped on the case but no manufacturer. Not sure what to do with the numbers but here they are: SNC P2793 9 50-SN js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Tranny
Rick Brashear wrote: Jack, SNC 2793 is the part number for the power transformer in the Ranger II and the Ranger I (late version) uses the same transformer. Just for a lark, I Googled SNC and it happens to be the name of the company, they still exist in Kenosha about 50 miles from here. I emailed them but probably will never hear from them but the mystery has been solved anyway. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] T/R Relay
I am looking for a 110v coax antenna switch and can't seem to find anything under $90. Anyone out there have one for sale? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Calling K0CRX
Don't recall talking to Mike but I got the socket sent and appreciate the kindness along with all the help I have received from this group. Thanks, NR9Q -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Thunderbolt
Someone posted a for sale on a Viking Thunderbolt and I seem to have deleted it. Can't find much info on this. Please email me. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] old round aluminum filter Capacitors
John E. Coleman (ARS WA5BXO) wrote: What was in these things? The inside of the can is lined with a perforated brittle screen perhaps some carbon stuff. The center post is connected to a foil which is wound in a spiral. I don't think it is laminated foil? Not sure just what you have but electrolytics are/were made by a process that produced the dielectric when fired up. The foil was uninsulated and immersed in a chemical soup that coated the foil with a very thin layer of dielectric when activated. It's electro/chemical magic. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Midwest Noon Net
Everybody seems to get up at the crack of dawn and yack for a few hours and then disappear as though a propagation broom swept them away. There is absolutely no one in the 75 meter AM window for most of the rest of the day. It may not be a great time for DX but surely there is propagation of sorts and it is being lost. So, I am taking it upon myself to do what I can to rectify the problem. Today was the first session of the Midwest AM Noon Net and we had a whopping 2 checkins. This is a call for anyone within reasonable distance of Chicago to tune in at Noon Chicago time and say hello and use up some of that either going to waste. Hope to hear from some of you tomorrow. 73 DE NR9Q -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Midwest Noon Net
Larry WA9VRH wrote: Hi Jack, Guess I could tune around but I will be mobile during the week. What frequency are you meeting on? 3885... be listening for you. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Ranger... good news, bad news
Thanks to the help of Rick Brasher and others on this list and three weeks with the longnose and soldering iron, I fired up the Ranger and got standing ovations this morning and on the Noon Net. The Noon Net, BTW, was a smashing success with 6 checkins including N900 from this list. The bad news is, after it was over I was informed that several ops had problems hearing me. I then fired up the TS430 and SB200 and got loud and clear from these ops. So, after all this work, I have a working Ranger that seems to need some help. I also have a working T60 that I was using with the amp while working on the Ranger. With that as background, I seem to have two options if I want to stick with tubes: 1. Boost the power of the T60 to get all I can out of the amp. 2. Reduce the power of the Ranger for the same purpose. The latter seems (intuitively) the obvious and simpler option. However, I have read page after page of mods and changes to the Ranger to make it suitable to drive an am and wonder why I can't just reduce the drive to get about 15 watts out and be done with it. What am I missing? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Wanted: D104
I can't seem to find my old D104 so I am looking for a new one. Don't much care what style or options, just want one that works. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Gary Blau wrote: Here's just one example: http://www.w3am.com/ranger.html That one is just the opposite of what I want to do. It increases power output. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Peter Markavage wrote: Adjustment Ranger Output - See Electric Radio Mag, Dec. 2000, page 25. Simple and works very well. Easier said than done how does one see that? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Gary Blau wrote: Read it again. The 6146 screen adjust lets you put the RF out anywhere you want from a low of ~8 watts to full tilt. Guess I missed that "detail". Question though... can that change be made on it's own? Secondly, I found this contrary statement on another site Most often mis-modification: Reducing output power when driving a linear amplifier through the use of a T connection and a dummy load and/or reducing loading or screen Voltage. This situation wastes one of this rig's better resources namely modulator headroom. When altering the R.F. final's impedance through reduced plate current, the modulation transformer no longer sees the designed load. The correct way to reduce output power is to use an external plate supply with a Variac on the primary or switch the low B+ Voltage to the final (removing the high B+) through the accessory jack. Either way the high B+ is left on the modulators. This gives an immediate improvement to the audio as the modulator requirements are now cut way down without forcing the modulator into an unknown load. With the accessory low power mod, the rig will put out abour 12-14 Watts carrier which is a good level for driving quitea few linear amplifiers. Every available effort to clean up audio distortion should be considered when runnung QRO AM! Whom do I believe? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Mike Sawyer wrote: Now let me ask you a question Jack: Do you intend to use the Ranger as a driver for the RF and the audio section as a speech amp for a bigger modulator? Not at this point. I just want to drive the SB200 and get at least as much out of it as I do with the TS420 and be able to watch tubes glow. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Gary Blau wrote: Yes, the screen mod can be made on its own, as can most of the others. Although it will change the Z the modulator works into it will not have a dramatic effect on audio performance which, quite frankly, already isn't too hot with the stock audio stages and mod xfmr. Interesting as I also was reading a site that claimed the (stock) Ranger has the best audio of any ham rig on the market. The compromise in adjusting the screen is a small one. Try it and see, if you don't like it it's simple enough to take it out. FWIW it worked great for me. Thanks for sorting this out. I will give it a try. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Dale Smith wrote: Hi I just got of the air on 38.70 with my ranger and swan Mark 1 amp two 400zs.Got great audio reports,about 150 watt carrier,using the low voltage = low power mod using the accessory plug,so simple to do .The mod that ne1s spoke about , it works great and the audio quality is suburb, Forget the screen mod and use this one you will not regret it.i can send info if needed. Please do as I do not understand it or am looking at the wrong one. The manual describes something like that but I do not see how it still modulates that way. I also seem to need about 20w to drive the SB200 to max and 10-15 doesn't hack it. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Gary Schafer wrote: If the tubes glow in an SB200 you are running them too hard. Roger but it is a good reference point. If it just starts to redden after 5 mins, I consider this acceptable and time to shut up anyway. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Jim candela wrote: A SB-200 is good for 100 to 130 watts RF output (carrier only) on AM. This amount on top of a ranger output is way less than 1 S-unit. Problem is sig reports go from barely readable to 20 over when I turn on the amp. >Replace that SB-200 with a SB-220 and the story changes considerably where 350+ watts (carrier) Sad story is that I thought I was buying a 220 but after driving 100 miles to pick it up, it turned into a 200. The power supplies and air cooling methods require you to de-rate the theoretical capabilities of the tubes when running AM. I have a muffin fan on top sucking air out and it seems to help a lot. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Larry Szendrei wrote: Modify the accessory plug as follows (or make a new one if you can find a spare): remove the jumper between pins 2&6. External Ip meter (+) terminal goes to pin 4; meter (-) terminal to pin 2. The jumper between pins 3 & 5 stays as-is. Almost took as long to describe it as it takes to do it... Love it. Now the problem is, I have no plug and made separate jumper wires that won't lend themselves to tinkering. Does any one have a plug for the Ranger they can part with? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Donald Sanders wrote: You can make a plug from an old octal tube base by removing or cutting off the pins and soldering a wire into the pin. Maybe I missed something but the socket is nine pins no 8 as in octal. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Ranger and Scope
Can someone tell me how to hook up a scope so that I can see the trap pattern coming out of my SB200 driven by the Ranger? Right now I just have a few turns of a loop stuck under my tuner that provides a nice envelope view but I would like to see the trap pattern also. Thanks, js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] 9-pin Johnson plugs
Bill W2DGB wrote: One ham I talked to recently about this subject said he used hot-melt glue as the filling compound. Q: Conductive? A: No problem. I don't get it. Why do you have to fill it with anything? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
I tried the accessory plug mod as suggested, removing 2/6 and putting a meter across 2/4 and it works but the power is less than useful. It less than 5 watts and would only modulate about 25%. Did I do something wrong? I put the light bulb back for now. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger... good news, bad news
Gary Schafer wrote: If you want to run 125 watts carrier out of the SB200 on AM that means you need to tune the amplifier up for 500 watts or a little more output with the load and plate tune controls on the amp peaked for maximum output with a given amount of drive. Not sure I understand the why of this. I did all as you suggested but found when I was done that the plate tuning of the amp was exactly the same as if I tuned it originally with the 100w carrier. The dip was exactly in the same place and the loading optimum is so broad that no change could be noted. Watching the scope on the output of the amplifier should show the modulation peak voltage double what the carrier voltage is on the scope. If it doesn't you haven't tuned up properly. Interestingly, the only way I get the peak voltage to double is with the ricebox. I can never seem to get more than about 50% increase with modulation. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Re: Ranger... good news, bad news
Gary Schafer wrote: So unless you have some higher gain tubes in the amp 12 to 15 watts drive will not be enough drive. Now you can tune and load the amp to get the 125 watts out with lower drive but it won't be linear. Now I am really getting confused. I have contended all along that it takes about 20w drive. Everything seems to work well including 100% mod when I drive with 20w. Only problem being that the tubes redden. As a point of interest, I am using 6L6's in the modulator but assume they just won't last as long and not effect the amount of modulation. Is this a good assumption? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: FW: [AMRadio] Ranger... good news, bad news
Gary Schafer wrote: The peak envelope power of an AM signal increases by 4 times over the carrier power with 100% modulation. We speak of peak envelop POWER but a scope is actually displaying peak voltage. How do we relate this to 4 times carrier on a scope? The linear amplifier must be tuned at the peak envelope power level or the peaks will never reach full power, the amplifier will flat top and splatter and you will not sound good. I still do not understand. The final is tuned with a tank capacitor and a loading cap. On my amp, the optimal positions of these knobs only change with the frequency is changed. Changing the input level does not effect this tuning in any way that I can see. How much drive power did you have when tuning up the amp? Anywhere from 15 to 80. Were you using a rice box to tune the amp or the ranger? Either... both. If you don't see the scope voltage double with modulation you haven't tuned up right. If you adjust the scope to say 2 centimeters with carrier then the modulation peaks should hit 4 centimeters. Ok... that answers the first question. However, today I changed the rf pickup from a loop on top of the tuner to a wire just running off away from the rig. Bottom line is, that it now looks like 100% modulation. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Knight T60 For Sale
Bought this Radio for $50 a few weeks ago to use while re-habing the Ranger. Works fine, looks like new... don't need it anymore $50 plus shipping takes it. Jack K9ACT -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Ranger Xtal Oscillator
About the only problem left with my Ranger is that I can not use the xtal oscillator because it will not shut down in Standby. I have been told that it is probably the xtal so I bought another from a person who understood the problem but it still does not work. I was also told that substituting a 12AX7 for the 12AU7 in the keyer was not allowed so I bought a 12AU7 and this changed nothing and diddling with the keying pot does not help. It quiets the VFO but not the xtal. Any ideas? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] 813/811 Rig
I am looking for an 813/811 rig or parts to build one. Open to ideas. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] 813/811 Rig
Rick Brashear wrote: How about an nice ART-13? From what I see, it would not be an improvement over what I have with the Range and SB200. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] 813/811 Rig
Larry Taft wrote: All are located in south Texas in (scenic, snow free) Rockport, 40 mi north of Corpus Christi. Seems like all the serious stuff is in Texas. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] 813/811 Rig
Rick Brashear wrote: You're probably right. How much power are you looking for? It's kinda like astronomy and telescopes (and women?). It aint never big enough! Unlike ham radio though, telescopes are limited only by money. Having said that, I guess something around 300w carrier would keep me happy for awhile. And "a while" is sort of subjective, the barefoot Ranger lasted till someone said, "you need to put some fire in the wire" and signed off. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] 813/811 Rig
[EMAIL PROTECTED] wrote: One could take the art13, load a few 572s in place of the 811(s) an jack up the B+... the original art13 mod tubes and pa are loafing at 1200V 2kv will give you a lot more punch.. Having invested so much effort into restoring the Ranger, it would be depressing to shelve it. The ART13 seems far more complex than what I need and still falls short. I want basically a plate modulated amp that I can drive with the Ranger exciter and audio. Back in the good old days, everyone was building these things and I assume there are a lot of homebrews out there collecting dust. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Xtal Oscillator
Rick Brashear wrote: Jack, You might check R7 and C23 to be sure they are in tolerance. Swap the two 6CL6 tubes (V3 and V4) with each other (or with known good ones) and see if that helps. I tried new tubes but that didn't help. I am going to put it back on the bench and check the other components. However, as I am not interested in CW, wouldn't it make sense just to disable the keyer? Also, the bias supply seems to be an after thought. Does it have anything to with the keyer and why was it added? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Xtal Oscillator
Larry Szendrei wrote: Maybe the 6LC6 XTAL osc. isn't wired into the keying circuit? I am thinking now that it is something like that but my brain is getting soggy trying to trace the wires. What I did find is a 100K from pin 9 going ground when it is supposed to be going to the vfo. There is a .005 cap going to ground with a jumper wire around it. There is a choke that is supposed to go to two lugs on a term strip but one end is soldered to a black wire that disappears into the mess. Also, the 15 mf dual ele under the keyer is actually a resistor and I thought I had it my the throat. Replaced it and it made not the slightest difference. I gave it up and came in for now. Looks like tomorrow's Noontime Forum will be back to the rice box. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Xtal Oscillator
Rick Brashear wrote: Jack, That 100k resistor on pin 9 of V4 is the one you're referring to it could surely have an adverse affect if grounded instead of going to the grid of V15 through R43. I don't have the drawings in here so I may have the pins wrong but it is the one that is supposed to be grounded in the earlier version without out the keyer. I went in there with the intent of grounding it to see if that would bypass the keyer and found this confusion. Is C88 the .005 you're referring to? Will have to check tomorrow. >It sure sounds like someone before you made some mods to the keyer. Judging from the wiring inside the VFO, it looks like the keyer was factory installed as it is very neat. It's near V3 were things are really barfy. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Ranger Power
Had a most interesting conversation with Steve W8TOW. Among other things, he offered another and really cool way to reduce the power of the Ranger without violating any rules. Replace the 6146 with a 2E26, reduce the grid current to 2ma and Voila! 15 watts. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Class C final tube swaping
Jim Candela wrote: For those who have tried this, how well did the 2E26 modulate? Ever look at the pattern in trapezoid mode? ;-) Further talk with the guy who suggested this indicates that we may have been reading from different song books. He seems to have had in mind reducing power for driving a plate modulated RF deck and not a linear. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Class C finals
John Coleman ARS WA5BXO wrote: So it would seem that if you replace the 6146 with a 2E26 then in order to get the proper operating parameter for the 2E26 one would need to reduce the loading. So why not just reduce the loading on the 6146? The suggestion was to reduce the drive on the 2E26 and load it to where it is comfortable which suposedly would be at 15w. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Ranger Audio
So I get my new D104 yesterday and spend a few hours removing the un-needed junk from it and fire up for the NoonTime Forum expecting all sorts of kudos and no one can hear me. One guy that could said it sounded tinny and crummy. So I switch to the Kenwood and they all say wonderful. I went of over the whole mic again, plugs, wires, grounds and fixed a few things and converted it into a boom mic. I make another contact and he says tinny but could be his receiver... nice guy. He suggests a few caps to check so back to the bench with it. After looking around, I find that the mic wire goes directly to the grid, no resistor divider and no input cap. I now see what that strange mess at the end of the shielded wire is... what is left of a 1m resistor. I replace all this stuff and it still sounds crummy. Then I find that R22 is missing in the cathode circuit of the output side of the first audio. I replace this and it still sounds crummy. To establish "crummy" I set the mic near a nice sounding radio and set up a shortwave receiver in an adjacent room to listen to while loading up a light bulb. In all cases, the Kenwood with the handheld dynamic mic sounds better. The only thing (I have said this many times) that I see left as a possible problem is C59a/b. These were resistors when I started working on it. I replaced these with 47uf and 67uf caps as that was all I had left at the required WV. They are supposed to be 15mf. I am not sure just what these do so the question is... could these cause a lack of lows in the audio? If not, any other ideas? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio
Rick Brashear wrote: Jack... are you sure you have C59b hooked up with the positive side going to GROUND? Roger. I specifically checked that. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio
Rick Brashear wrote: I know this is a dumb question, but are you sure the D-104 is of the High Z variety? Not dumb at all. How can I tell? It puts out about 10mv ptp into a scope. Did not measure the DC resistance because I am not sure I can apply voltage to it safely. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio
Todd, KA1KAQ wrote: Happened to work Ed WA3PUN and the gang out that way late one night, and was informed of what was wrong ad exactly what was needed. Ed even sent me a schematic with the necessary changes. Changed out said input resistor in my transmitter to a 4.7 meg I had on hand and it made a world of difference. By coincidence, I talked to Ed the night before last. Didn't get into much radio as we found so many other things to talk about. Anyway, I replaced the 1 meg with a 5 meg and it didn't make the slightest difference. I didn't think it would as when I started, there was no resistor at all there. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio
John E. Coleman (ARS WA5BXO) wrote: Hi Jack This may be another dumb question but when you have a 60 watt bulb for a dummy load and you tune the ranger into, of course it won't light to full brilliance of 60 watts with only 40 watts going into it but it should brighten up a lot, even to full 60 watt brilliance, when you say "FOUR" in the mic. I think you forgot the question but I have a 150W bulb that I switch in and out. The brightness is just a relative thing as I am just tyring to avoid annoying people with all my testing. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Ranger Modulation
I suspect my mic problem is with the cartridge and I will be getting a new one. The now problem seems to be that I just can not seem to get 100% modulation no matter what mic I use. When I adjust the scope so the carrier is +/- 1 div, I can never get it quite to +/- 2 and 1.5 is pretty typical. On the other hand, I have no trouble getting a flat line between cycles with too much audio which I understand is the indication for over modulation. I am using a audio generator at 1 kHz talking to an earphone, against the mic. The modulation meter can easily be pinned if I use an amplified mic but it has no effect on the top of the envelop. What does all this mean? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Modulation
Larry Taft wrote: Try reversing the phase of the audio by swapping the output leads of the modulation xfmr. First I swapped the tubes to no avail. I then swapped the wires and now have a strange buzzing that I can not locate but it shows up on the audio with the gain at zero. Don't know if I barfed something up or not but I vaguely remember reading somewhere that this an an indication to reverse the leads. Weak tube in the audio chain causing lack of gain needed for the positive peak. Just ordered new audio tubes. Now I notice another discrepancy. the manual that came with it says to adjust the mod current to 75-90 ma. The manual that Rick sent me for the new version which I seem to have says 55-70 and no clue why the difference. Which is correct and should I make an allowance for using 6L6's instead of 1614's? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Modulation
Gary Schafer wrote: You can't reverse the plate leads on the modulator tubes I nearly got out of bed in the middle of the night to do it but I waited till after breakfast. First check to see that you have proper grid current on the 6146. 2.5ma is what the manual says... no problem. Be sure the screen voltage is high enough on the 6146. No problem. Try another 6146. Guess I should have ordered one of those also. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Modulation
A.R.S. - W5AMI wrote: Let's back up for a minute here. Jack, I know you said you got some bad audio reports on the air. What about the amount of audio? Did they indicate you were under-modulated? Yes. >Did any of these guys offer a recording so you could hear it yourself? No Why did you order new audio tubes? Someone suggested it. Have you determined that's where the problem is? Just placed the order this AM. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Modulation
Larry Taft wrote: What happens when you hook the sig gen to the mic input, skipping the D104? While you're at it do a frequency response curve of the setup. Oft times this is an interesting test. I don't think I have actually gone directly in but I have used 3 different mics and even an amp and get the same results as far as peak modulation is concerened. The only difference is the position of the audio gain control to get over mod on the base line. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Modulation
Rick Brashear wrote: Jack, I would stay with the 55-70 volt modulator current leaning toward the high side. I try to set mine at 65 volts. I presume that was a typo. Does anyone challenge this? What is the effect of different modulator current values. Changing it risks breaking the wire on that resistor... which BTW, Rick sent to me as a gift. Why would Johnson change the value so drastically from one manual to the next? Does the 6l6 have anything to do with my problem? I would also put the output leads from the modulation transformer back as they were... Will do. If you haven't replaced C69, I would. Don't remember... I am getting soggy. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio
John E. Coleman (ARS WA5BXO) wrote: A 150 watt bulb is going to be pretty dim with just 40 watts RF but does it brighten up with modulation at all? Sure. This would agree with my estimate of 50% modulation. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Modulation
KEY5MIR wrote: Connecting your audio generator to the mic input and tracing the sine wave through your audio stages with an Oscilloscope can be fun and educational if you like that kind of stuff. That might help you zero in on the problem. Other than watching it get bigger and assuming that it remains sinusoidal, what would I look for indicated by my problem? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Ranger Audio... the numbers
I can not do a freq response test because I do not have a proper sig gen. Mine is a cheap step job and the amplitude is all over the place. I put a 1khz sine wave into an earphone sitting on the mic and measured p-p values with a scope Pin 2 V7A (grid) 5mv Pin 7 V7b (plate)50 mv Pin 2 V8 grid. 3 v Pin 1 V8 plate.. 40 v Pin 5 V9/10 grid 20 v Pin 3 V9/10 plate... 10 v (standby) Pin 3 ""... 50 v I assume that where the voltages dropped it had something to do with the transformer being across the output and the standby more for the mods. I all cases, the amplitude dropped a bit and the sine wave got a little "bent" when going from stdby to phone. It flattened out slightly. In the case of the grids of the mods.. a great deal of distortion was seen when in the phone mode. Only an approximation of a sine wave with jagged festoons all over. None of this was seen when looking at the plates in the phone mode. So, what can we make of this? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio
John E. Coleman (ARS WA5BXO) wrote: Here is a quick test that might make some sense. Reduce the loading to 50 percent of the current in the final so that the RF output is only about 20 watts. And check the voice peaks then. Did that makes no difference. > Really it is just a lot easier to trace with an audio generator. That is what I use. I will ponder the rest of your comments later. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the numbers
Gary Schafer wrote: Check at the center tap of the mod driver transformer with your scope and see if you see anything there. Could be a bad or missing bypass cap there. It's brand new but I didn't have a 15mf so I used a 47mf.. ditto for C59A. Check the jumpers on the plug in the back to be sure that the proper taps on the mod transformer are selected. All ok. Check the clamp tube circuit. Could be holding the screen slightly low on the 6146 and clipping the modulation peaks to the screen. Screen voltage is 150 and the nom is 190. However, R35, the Modulator Screen Voltage Adjustment resistor seems to go to the clamp circuit and it is not at all clear what is going on here. It seems to me that diddling with it changes the screen voltage on the 6146. So does diddling with the modulator current effect the 6146 screen voltage or do I have a screen voltage problem? Check modulator screen voltage. It is the nominal 250V... but again, why is it nominal if that resistor is there to diddle with the current? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the numbers
Rick Brashear wrote: Jack, The adjustable resistor (R35) has a direct affect on the screen of the 6146, so that is normal if the clamper (V6) is performing correctly. Then why is is called the "modulator screen voltage adjustment" on the schematic and used to adjust the mod current? > You may have to adjust R35 to get the needed screen voltage on the 6146. But that would conflict with adjusting it produce the appropriate modulator current no? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the numbers
Gary Schafer wrote: It's beginning to sound like a partially shorted mod transformer. I checked the resistances of the transformer earlier in the game and they are nominal. >With 20 volts signal on the grids of the mod tubes I would think that >you should see at least 200 volts on the plates?? I have no idea but if mine is off by a factor of 4, would it work at all? Could be bad 6L6's. Or back to a reason for using 1614's perhaps? Can you easily get high modulator plate current with audio applied? Will the mod plate meter peg or nearly so if you hit it hard? Yes. If it will that is an indication that the tubes are good and the transformer may be shorted. Except that the transformer appears to be ok. To refresh.. we are talking about a max of about 75% modulation on peaks but no problem over modulating at the base line. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the numbers
Larry Taft wrote: Just from "rule of thumb" for audio tube amps you should get a couple hundred volts audio swing (not related to BIRD WATTS) at each plate to ground. 50 v is only a couple of watts audio. Could you explain the math on that? How do you arrive at watts knowing only volts? As a data point, 50v into a 50 ohm load is 50Watts js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the numbers
Mike Dorworth, K4XM wrote: Ranger modulation Transformer 33 watts voice Primary 7083.8 ohms plate to plate. Red is ct. Secondary 3571 ohms. Black is ct. 892 ohms each side to tridode grids. You lost me here. The manual says 100 ohms and 28 ohms respectively 1.9837 Z stepdown ( nominal 2:1) 1.4085 step down turns ratio.. I guess we are talking z vs resistance. So, how does one measure the Z of a transformer? If I put a 1khz sig in one end should the amplitude drop by the z stepdown ratio? js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the Pics
I did some more sig tracing and came up with some pics of where the trouble seems to be. Putting a 500 hz sine wave into the mic input, I see a nice sine wave until I get to the modulator tubes. The grid in standby looks close enough but when I go to phone mode it gets flaky. The plates look really flaky in standby but look more normal in phone mode but there seems to be a bunch of waves competing for the space. I posted some pics to http://schmidling.com/mod.jpg Comments eagerly awaited js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the Pics
[EMAIL PROTECTED] wrote: Just my opinion. I have not been following the problem. What are you looking for?? Well, the current problem is the fact everyone complains about my audio. Tinny, yucky, narrow... like an old telephone, etc. New (used) D104 is the worst of the bunch but known good mics that I have used for years, doing voice overs for film and video don't sound much better. I taped tests of 3 of them and the D104 sounds lousy and the dynamic and electret lapel sound just fine and are nearly indistinguishable from each other. When I put them under an earphone tuned to a good broadcast signal and fire the Ranger into a dummy or antenna, they all sound lousy. Seems obvious the Ranger is doing something to the audio so I have been sig tracing to see where and the pics are what I found. In the meantime, I removed caps one at a time from the front end and none of them made the slightest difference. I left them all out and decided it's time for a break. I have no idea where to go from here. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the Pics
[EMAIL PROTECTED] wrote: Hi Jack: You did not give any reference to the p/p amplitude of the signals?? Missed this but I posted the numbers in a previous post but basically, they started at about 10 mv and increased with each step but I was in error with the 6l6 plate saying it was 50 v when in fact it was about 200v. I had forgotten to calibrate the scope before running the tests. The relationships were right but the absolute numbers were all too low. I actually measured them all again for the pics but when I got to the end I realized the problem and didn't fell like running them again so I didn't include the new numbers but all the stages amplify which I guess is what counts. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] D104 element Rebuilding
Jim Candela wrote: Many years ago my Astatic 'Rochelle salt" crystal element died from prolonged exposure in my garage. The output from it was low, and distorted. With a burst of curiosity, and desperation I took the bad element apart. Feeling I had nothing to lose, I did just that yesterday but used sili glue to hold it all together. It was an interesting learning experience. Unfortunately, it didn't help my problem but mine was working; just not to my satisfaction. It still works about the same so I ordered two new cartridges from Mouser to see if it's me or the cartridge. I had been wondering how age/time/humidity could have the slightest effect on a quartz crystal millions of years old. Turns out they are not quartz at all but Rochelle salt which, like all salts, are very hygroscopic and turn to mush in time. js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ranger Audio... the Pics
[EMAIL PROTECTED] wrote: Hello Jack: One last suggestion from me, if you use a headphone near the microphone it can form a "Helmholtz" resonator effect which is to say that the audio will be narrowed up so I would use a speaker (3-10 inch dia) as a source. Interestingly, I suspected something like that but didn't know it had a name. The head phone seems to be a good one (Koss) but this now seems to be irrelevant but a good learning experience. I went to the headphone because I had to keep the receiver in a different room using a speaker. This precluded listening to changes as I made them. Turns out apparently, the fidelity was already lost so the changes made no difference. Great input! Is there no one near you who can help?? Not within a reasonable drive and then I wouldn't learn anything. Thanks, js -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] SS nice guy report
Rick Brashear wrote: It is truly sad to listen to such non sense on the amateur bands whether it's AM or SSB. The two things I have always appreciated most about the AM crowd is their knowledge and gentlemanly behavior Well, I met my first "belcher slob" tonite. I made a tentative sched with WD5JKO for 9:30 in the hope that he would get my email response to his telling me he heard me last night. Most of the activity was on 80 so it was quiet on 85... so far so good. Some guy starts calling CQ or something close to that with a nice loud sig so I thought if he could hear me, we could keep the channel open. Spending 15 mins with this guy was about as bad as it can get. He would tell me what he was running, belch and then turn it back after asking me what I was running, belch. This highly intellectual exchange was made about 5 times and I finally said I had to go potty and would he keep an ear out for Jim. Sure belch will belch belch. Nothing heard form Jim so I listened on 80 for awhile and there he was again, grossing out that gang. Aside from that, it looks like I can make it into Texas under the right condx so I would like to invite anyone on this group to try to blast the either tomorrow night at 9:30 Chicago time. It would be fun to actually talk to hams on the radio. 73 K9ACT -- PHOTO OF THE WEEK: http://schmidling.com/pow.htm Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
