RE: [AMRadio] UPS Damaged Goods
Very true. I worked 4 hours for Purolator and was told to leave because I could not THROUGH the parcels fast and far enough as they came of a belt. I was aiming for the far end of a tractor trailer box. They refused to pay me. I was 22, now I am 45 and if they did that to me, I would take them to the labour board for 20 lousy bucks just to expose them. ;-) The labour board goes hormonal over crap like that. Alan -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ronnie.hull Sent: April-08-07 9:56 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] UPS Damaged Goods I want to say just one thing in this subject about UPS. THEY COULD TEAR UP AN ANVIL! Ronnie - W5SUM __ 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.
[AMRadio] Ptt mod on a DX-60
I have not modified my DX-60 for the ptt mod. I just don't understand how I can zero beat my VFO. It is the classic DX-10, HR-10 and VFO. My vfo does not put out a strong spot tune. Any thoughts out there? BTW, thanks for your answers on antennas and stuff for the it was very clear and I appreciate the time everyone put into it. 73, Alan __ 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] Ptt mod on a DX-60
That's easy!!! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Macklin Sent: April-06-07 1:54 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Ptt mod on a DX-60 For DX-60 PTT I just wired my mike switch in parrell to my key. The mike switch activates an external T/R relay that has the aux contact wired to open the receiver mute line and ground the Tx key line. No internal mods to the Tx. I use the DX-60/ HG-10/HR-10 combo. When I turn the DX-60 mode switch to TUNE I get a strong signal in my HR-10. But you need the key down. I THINK! Bob Macklin K5MYJ Near Seattle, Wa Real Radios Glow In The Dark __ 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.
[AMRadio] 50 ohms simple question
Basic question Why is it that my radios are 50 ohms and the impedance at the feed point at the antenna (pure dipole) is 70 ohms. Am I mistooken Alan __ 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] 50 ohms simple question
Kewl, Need to read up on dipole basics. Alan -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Geoff/W5OMR Sent: April-05-07 3:53 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 50 ohms simple question Alan Beck wrote: Basic question Why is it that my radios are 50 ohms and the impedance at the feed point at the antenna (pure dipole) is 70 ohms. Am I mistooken No, yer not mistaken but, if you want to lower the input impedance to your dipole, bring the legs down to around 40 degrees, and you'll drop the input impedance to the antenna down around 20 ohms. -- 73 __ 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] Meter Sticking SB-220
I seem to dimly remember some thing to do with passing a magnet across it carefully and it would clean up. Some one with more experience please confirm my suggestion. Alan VY2WU Greg Schultz Sr wrote: I have the multimeter on my amp(sb-220)that sticks above zero. I tried adjusting the zero on the face but could not get it to zero. I remember reading some time back several emails on this topic. Can anyone suggest a fix other than replacing - these meters are very hard to locate. Thanks for any help Greg W5RY __ 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 To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ 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 To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Thanks to those who replied re: tubes
Hi, I am looking for NOS to keep as a batch for my HR-10 Heath RX. 2 of 6EA8 sourced 6X4 already 6BZ6 6EA6 6BJ7 6BE8 I would love to have a few NE-2's to replace my burnt out one in my VFO as I think it allows radiation to aid in spot operation, right now it is very weak. If someone wishes to correct me on that one, I would graciously accept. Alan VY2WU __ 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] Heath tubes
Does anyone have NOS tubes or recent tubes for the HR-10 RX by heath. Basically I think I need a 6X4 and 2 6BE8's to start with to clean things up. When I turn up my RF gain the frequency shifts. The RF gain is going to ground via the cathode of the first 6BE8 in the circuit. 73, Alan VY2WU __ 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] DX 60 Circuit breaker
The schematic for my DX 60 shows a circuit breaker on the upper side of the return side for the power transformer. BTW, I had something flicker on me, and the rig died. I hard wired the power and decided to try to run it off of a power bar. Works just fine, but no output to my antenna relay. I disconnected two black wires at the power supply because they would short out main switch I suppose this is the reason I don't have an antenna relay. So, where is the DX-60 circuit breaker. Any yes, I did check the fuses at the power plug. 73, VY2WU
Re: [AMRadio] DX 60 Circuit breaker
Brian, Please do not attempt anything on my account, if you are sick, you are sick. I am sure someone else will respond in kind. The rig does work when I hot wire it to the blacks, however there is another cable involved. I forgot this. It is a phasing thing. You are in my prayers and please do not move for my account. I am in need of getting this going just off a power bar because I don't have the money to buy the parts for the relay upgrade. Wish I did though. 73, Alan VY2WU Brian Carling wrote: I think you willl find it under the chassis. Right now I am too sick to take the cover off my DX60, recovering from surgery and still bleeding. I can probably check on Monday if no one else has an answer for you. It is possible that you have a shorted P.S. capacitor or maybe a bypass capacitor. The schematic for my DX 60 shows a circuit breaker on the upper side of the return side for the power transformer. BTW, I had something flicker on me, and the rig died. I hard wired the power and decided to try to run it off of a power bar. Works just fine, but no output to my antenna relay. I disconnected two black wires at the power supply because they would short out main switch I suppose this is the reason I don't have an antenna relay. So, where is the DX-60 circuit breaker. Any yes, I did check the fuses at the power plug. 73, VY2WU __ 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] DC-60 Relay trick
I am considering doing the relay mod on my DX-60. My main question revolves around how will the rig work at the end of the project? I expect I can use the PTT for going straight from standby to TX. That I understand. How about tuning my VFO to the correct frequency? Can I be locked in tune mode when the PTT is not active? Using the Spot, Opr, Standby switch on the VFO I can really feel the wear on my Mode switch and move it slowly and carefully. 73, Alan
[AMRadio] antenna tuners
I don't believe in them. If you can't resonate your antenna, then what are you doing? If you use a tuner, you are creating a voltage divider effect that creates a reactive load in your shack, to ground that makes your antenna feed line + radiating elements. Over the years, the importance of having at least a 2:1 match with at least 1.5:1 some where in the the antenna design. Proper antenna design for your favorite frequencies is the best choice. I currently use a multi-element dipole to cover 80,40,20,15 and 10 meters. I just use a VSWR bridge and back off the power when the SWR rises close to 2:1. I am not saying my answer is the best, I am only stating my opinion. Just like microphones in the sound work I help out with at church. If they are not singing into the mic, I cannot fix it without creating a gain structure that is sucking up to feed back You need to fix your problems at the source. I our cases, it is resonance of your antenna, by some means. Even my hamstick on my jeep does great due to attention to resonance. 73 Alan VY2WU
Re: [AMRadio] antenna tuners
Thank you Brian for your correction. Of course we need to achieve resonance for the antennas of solid state rigs. And yes they are matching networks, however they do consume power that is wasted, especially at the end of a coax. However, they can be used at the feed point to much better effect. I do honestly believe in using resonant antennas. Also, I did not take into consideration the fellows using open wire feed lines to baluns inside the antenna tuner. I stand corrected. However, I will always try to achieve resonance in my antennas as that is the best way in my mind to radiate the most signal. I agree with you that there are some of us who have to resort to tuners for space reasons or other confinements. Thanks for assisting me in getting a clearer point across to the group. Yes, I do see the need for a matching transformer in some situations. I am currently running a tube station, so it can take SWR, but I wish to strive for the best match. And yes, the antenna tuner is a matching network consisting of coils and capacitors. Perhaps I chose the wrong analogy. You have provided me with stuff to read up on in order to remind myself of lessons learned long ago. Thank you. Best 73, Alan Brian Carling wrote: I don't believe in them. If you can't resonate your antenna, then what are you doing? You ar etransmitting some energy and you are getting a whole lot of reflected power that is wasted. You might also be cutting back a lot of your power in the final RF amplifier of a modern rig. If you use a tuner, you are creating a voltage divider effect that creates a reactive load in your shack, to ground that makes your antenna feed line + radiating elements. Maybe - what if the tuner is outside at the base of the antenna? Over the years, the importance of having at least a 2:1 match with at least 1.5:1 some where in the the antenna design. Huh? Over the years many of us have transmitted with a 3:1 SWR and no tuner and made plenty of contacts - tube finals of course! Proper antenna design for your favorite frequencies is the best choice. But some of us can't always get what we want. When you MUST compromise, there is a LOT of good that can be said about a matching network for one's antenna. It is usually an impedance transformer rather than a voltage divider. I currently use a multi-element dipole to cover 80,40,20,15 and 10 meters. Just like microphones in the sound work I help out with at church. If they are not singing into the mic, I cannot fix it without creating a gain structure that is sucking up to feed back Different entirely from an antenna tuner. You need to fix your problems at the source. The antenna is the load. I our cases, it is resonance of your antenna, by some means. Even my hamstick on my jeep I have had GREAT success RESONATING antennas with a matching network. I don't understand why anyone would not believe in something when they are so effective. __ 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] BAMA
Bama is requiring me to use a user name and password. When did this change? 73 Alan
Re: [AMRadio] Modulator for DX60 available
I am sorry, did we work out how it could be interfaces with a DX 60? Normally there is a transformer in parallel with the output plate I think and modulation is applied to the other side to squish the RF at Audio frequencies. Is this what you mean by output iron? Best 73, Alan John Lyles wrote: I have a self contained, commercial looking modulator chassis that would work well with a DX60 sized rig. It uses a pair of 807s and has the input and output iron and driver tubes. It came from a SK's pile this summer. If there is interest, I would part with it to help out a DX60 conversion to high level plate modulation. Its a small thang. Technical details available upon request. 73 John K5PRO __ 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] HR-10 problem
good ideas, thanks. Alan Brett gazdzinski wrote: Maybe the tube is out of bias, to much screen voltage, or some resistor has changed value and the LO tube voltage is varying around? Maybe check things with the DMM? Or maybe the bfo is changing, not the LO?? Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Monday, April 10, 2006 9:49 AM To: AMRadio@mailman.qth.net Subject: [AMRadio] HR-10 problem Hi, I am running an HR-10 RX in my shack outside and am wondering how to cure an annoying fault. Or, this may be bad design, but I don't remember this from when I was a kid. When i turn up the RF Gain, and end up close to full on it, I get a shift down in frequency of the CW note. So far that I have to retune the BFO to get it back. The RF Gain is in series with the Cathode of the first RF stage of the RX. perhaps a Zener diode to cure it? And if so, I guess I should measure the voltage someplace and clamp with a zener, but then again, I would be modifying the whole circut. Anyone know how to fix this? Best 73, Alan __ 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] Amplifier to use with my DX-60
Thank you Tom. ;-) I love been a thread seed. You guys have all been great in helping me decide which linear to seek out in the Heathkit cheapo line. so, is the 220/230 the best choice to get the job done. I think from what I am seeing here that the 200 just would not cut it. 73, Alan [EMAIL PROTECTED] wrote: If I understand these responses this all boils down to answer Alan's original question and that is that a SB-200 would be ok with the DX-60 at the DX-60's max output . Correct? Tom K3TVC - Original Message - From: Mike Dorworth, K4XM [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Thursday, March 16, 2006 5:45 PM Subject: Re: [AMRadio] Amplifier to use with my DX-60 YUP. The two things are the tubes and the power supply.. One half dissipation is MAX.. you are using 800 watt tubes so 400Watt carrier is max. The Thunderbolt has a real power supply, so, sure 300 watts is fine.Since SSB is 25 to 30 percent average of peaks the manufactures can squeeze in small supplies for voice or CW service. Ever make you wonder that they might allow 2500 watts input SSB but only 400 for RTTY. AM and RTTY separates the Men from the boys.. Mike - Original Message - From: Dale Smith [EMAIL PROTECTED] To: Mike Dorworth, K4XM [EMAIL PROTECTED]; Discussion of AM Radio amradio@mailman.qth.net Sent: Thursday, March 16, 2006 5:43 PM Subject: Re: [AMRadio] Amplifier to use with my DX-60 How about a Johnson thunder bolt is 300 watt carrier ok ? I hope so cause that is what I have been doing The transformer in there is twice as big as my swan mark 1. thanks ..de/dale/ka5who __ 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] Amplifier to use with my DX-60
You have an interesting point here John. I don't know if I have access to enough STUFF to do a job like that, I am fairly isolated here on PEI. It is almost better to find a Johnson Transmitter or something. I AM going to try a 160 meter end fed Zepp to get some height and gain off my antenna. Cheers, Alan John E. Coleman (ARS WA5BXO) wrote: I still say, forget the linear, and use less money to build a plate modulator for the DX60. It will work better, sound better, cost less, and heat the shack up less. As I recall the DX 60 has a 6146 in the final for class C CW and puts out about 40-50 watts of carrier if it were plate modulated it would do at least 200 watts PEP and sound great. There is a number of different ways to do the modulator. A lot of guys just find and old PA and a transformer to match to the final. Some build the modulator output stages only, input XFMR tubes and modulation XFMR. Then they drive it with a small microphone amp. That's more stuff to set around on the desk but it works. There are a lot of self contained 25 and 50 watt modulator circuits around and probably a lot of complete one piece store bought modulators as well. As I recall, EICO had a pretty nice one that was to go with the EICO model 720 but it was used on many different rigs as well as being used as a driver for big modulators. A buddy of mine had an ECIO 720 and built a nice home brewed modulator for it using 1625s in AB1. It sounded real good. I built one similar to it with less power output for my Knight Kit T60. The T60 had the same control carrier AM that the DX60 does. What a difference it made when it was plate modulated. Very little modification is necessary in the DX60 to accommodate the external modulator. John, WA5BXO __ 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] Amplifier to use with my DX-60
I would like to use a cheap am with my DX-60. An SB-200-230 seems to be a Class B amp. There for it only conducts on the positive going cycle. I don't mean to sound silly, but someone told me I could run this in SSB Mode using AM input from my DX-60, I run 100 Watts carrier for 400 Watts peak, now that makes sense. What does not make sense is how do I get the other side of the wave form The Tank??? I guess the tank. I really need to go cheap on this project. I know, you guys will probably say go big or go home. Best 73 Alan
