Re: [Drakelist] MS-4 Speaker

I replaced the speaker in my MS-4 with one at the bottom of this page. It is a little expensive ($26) but it is a drop in replacement and it sounds great. The part number is: (COL) SPKR-4-57 http://www.surplussales.com/Microphones-Audio/MicroAudio-8.html 73, Bob K6GGO I need to replace

Re: [Drakelist] C-Line RTTY

'forever'. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line and TR-4/C Service Supplement CDs www.k4oah.com Robert Fish wrote: I have been thinking about using my C-line for the RTTY contest this weekend. How do I set the transmit audio (gain) level. Do I set it the same

[Drakelist] C-Line RTTY

I have been thinking about using my C-line for the RTTY contest this weekend. How do I set the transmit audio (gain) level. Do I set it the same as SSB where the peaks are about 150ma? I am not set up here for FSK, so its going to be a sound card affair. Any general advice for C-line RTTY?

[Drakelist] Sherwood Mods video

Hi Guys, I was tuning around on 15 meter CW this morning and I had my Ipad handy, so I made another video. (Oh no, not another one). This one is shorter. With all the recent discussion of the Sherwood mods I demonstrated the 600hz cw filter somewhat. The band wasn't crowded enough to

Re: [Drakelist] problem with deoxit

Is the lesson, never trust your older brother? Bob K6GGO How I learned to be paranoid with cleaning agents: When I was a mere teen-ager, I decided to clean the mode switch in my HW-101 with some contact cleaner that my brother had brought home from work. I hosed the switch down well, waited a

Re: [Drakelist] TX-4C 160 Mod ?

Hi Guys, I am not sure how good the print quality is, but the entire collection of HR magazine (or most of) has recently been made available for download in PDF or just about any format you chose here: http://www.archive.org/search.php?query=collection%3Aham-radio-magazinesort=-publicdate

Re: [Drakelist] TR-7 Transmit issues

a schematic. I will take another look at Ron's site. Thanks again, Bob K6GGO Hi Bob: Before jumping right to looking for a flaky component, have you done the requisite re-seating of the board? Deoxit on the edge connector, and relay cleaning? FWIW Curt KU8L On 12/20/2011 3:15 PM, Robert

Re: [Drakelist] TR-7 Transmit issues

I found the schematic on Ron's site. Thanks Lee. Bob K6GGO Hi Guys, Thanks for the replies. The first thing I thought to do was re-seat the boards and I did. Well, I didn't re-seat the ones that were hidden under the display board (DR-7). I'll take it apart and re-seat them if I have to,

Re: [Drakelist] TR-7 Transmit issues

Well, it seems that the first transistor on the driver board is the culprit. Or, at least, when the transmitter fails, that is where the RF stops. It is a Motorola MPS-H20 I found the schematic on Ron's site. Thanks Lee. Bob K6GGO Hi Guys, Thanks for the replies. The first thing I thought to

Re: [Drakelist] TR-7 Transmit issues

Sorry about that, I sent the e-mail before I was done typing. Does anyone have source for an MPS-H20. It looks like they aren't available. I found a reference to it on the Drake mods document. The guy says he replaces them with MRF237 because it can handle a little extra power. Apparently, he

Re: [Drakelist] 5 watt levels

Hi Ron, I asked a similar question recently about SSB QRP with Drake equipment. I think some of the thread applies to CW. As usual, Garey and Jim provided good info. Here's the link: http://www.mail-archive.com/drakelist@zerobeat.net/msg17173.html 73, Bob K6GGO Hello, I wonder if anyone

[Drakelist] New toy

Hi Guys, My wife bought me an Ipad recently. I used it to make a you tube video of my latest project and a little shack tour. It is Drake related indirectly. Here is the link: http://www.youtube.com/watch?v=_3LSM-sGxxI Don't worry this isn't spam, it's really from me. Bob K6GGO

Re: [Drakelist] Sources for PTO return spring?

Hi Steve, I would probably just go to the local hardware store and pick out a spring that is a bit on the loose (less tension) side and clip a couple of turns at a time off of it until it was the proper tension. Then just bend down the last loop and hook it. I was a field service tech for

Re: [Drakelist] Sources for PTO return spring?

I forgot to add, use an old pair of dikes for clipping turns off of a spring. It will ruin a pair of dikes in no time. (don't ask me how I know) Bob K6GGO Hi Steve, I would probably just go to the local hardware store and pick out a spring that is a bit on the loose (less tension) side and

Re: [Drakelist] T-4X Stability: EPILOGUE (Almost!)

This has all been a most interesting exercise, nonetheless---I only hope that my ramblings herein have NOT inspired readers to unsubscribe from the list..! On the contrary, Eddy. I find this stuff fascinating. The most productive learning environments always have people who say things like,

Re: [Drakelist] WTB T4XB 40M Crystal (18.1 MHz)

I have one, Pete. Are you good on QRZ.com? Bob K6GGO I am missing a 40M crystal for my T4XB. Any one have a spare crystal for sale. My Zip is 98368. I have a 30M Crystal (21.1 MHz) and would also consider a swap. Thanks, Pete N6QW ___ Drakelist

[Drakelist] Running QRP with Drake gear

Hi Guys, As some of you guys know, the ARRL sweepstakes phone contest starts in a few hours. It looks like I am going to have to some time this weekend to play radio. This is, pretty much, an exclusively US and Canada contest. I usually only compete in the CW contests if at all, but I was

Re: [Drakelist] Running QRP with Drake gear

a resistive pad to lower to the desired level. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line and TR-4/C Service Supplement CDs www.k4oah.com Robert Fish wrote: Hi Guys, As some of you guys know, the ARRL sweepstakes phone contest starts in a few hours. It looks like I am

[Drakelist] Deja Vu?

I was listening to 10 meters this morning on the C-Line, but the band seemed dead. (great propagation numbers but no sigs, just some guy from Texas sending CQ). So I decided to switch to 15 to look around. The calibration on 10 meters is off by 5kc or so. So I have to recalibrate the dial when

[Drakelist] Unbalanced

Hi Guys, My wife would probably say that the word unbalanced should appear in the subject line of all my correspondence. However, in this case I am refering to a T-4XB. All this talk from Steve and the other guys about restoring their B-Line gear got me to thinking about the B-line I have

Re: [Drakelist] T-4XC PTO chirps

Hi Guys, I have good news to report. I have the PTO back in the T-4XC and it is working fine. It turned out to be the hardened grease in the PTO ball bearings causing the chirp and warbling after all. It didn't seem to be a plausible cause to me for the symptoms I was experiencing. But before

Re: [Drakelist] T-4XC PTO chirps

I meant Dogbone caps, not horseshoe. Sheesh. Hi Guys, Here is an update on my T-4XC PTO adventure. I eventually removed the PTO from the transmitter and put it in a panavise on my bench, powered it up and listened to it on my TR-7 with a sniffer wire. While monitoring the tone, I tapped on

[Drakelist] T-4XC Unstable PTO (I think)

Hi Guys, I have been ignoring an issue with my T-4XC until recently. When I use the R-4C PTO to control the receiver it seems to work fine. When I use the T-4XC PTO to control the receiver I get sort of a chirpy, jumping around of the cw signal I am trying to copy. Both units work fine in

Re: [Drakelist] T-4XC Unstable PTO (I think)

K6GGO */Hi Bob,/* Don't even /START/me on this topic!!! * : )* */~73~ de Eddy VE3CUI - VE3XZ/* * On 2011-10-26, at 10:32 AM, Robert Fish wrote: Hi Guys, I have been ignoring an issue

Re: [Drakelist] T-4XC PTO chirps

Garey, Eddy, Paul, Curt and Steve, Thanks for the quick replies guys. This is a great bunch on this list. I am convinced that it is the PTO. If I lightly tap on the PTO can with a pencil tip (and I mean very lightly) it causes the signal to jump around. Maybe just a cold solder joint. I have

Re: [Drakelist] T4XB Question

Hi Pete, This guy has a multi-section cap available for the T-4XB. It looks like it may be the correct cap (similar values). I have not done business with him, but I have heard good things about him. http://www.hayseedhamfest.com/capinfoT4X.htm Good Luck 73, Bob I am in the process of

Re: [Drakelist] Drale Fuse

I've never tried this, but couldn't you just clip the leads off of a cap or resistor from your junk box and solder them on to the end caps of a regular 8a fuse. You would certainly reflow the inside connection but as long as you still have continuity when your done, no harm no foul. I wouldn't

[Drakelist] FS-4 Replacement?

Hi Guys, I have an IQPro VFO that I built for a Direct conversion receiver I am building. It is a 9854 based DDS VFO designed by Craig AA0ZZ. I have decided to go a different route with the DC receiver LO. That leaves me with a perfectly good VFO to find a use for. I thought that maybe it

Re: [Drakelist] T-4X alignment anomalies

Hi Gary and all, I have the B-line and C-line cd's. I don't see a troubleshooting sheet in there on either one. Does one exist for the C-line and b-line transmitters. I have often wondered what levels I should be seeing at the various stages of my T-4XB and T-4XC. Do the p-p levels you mention

Re: [Drakelist] Anyone ever look inside the PBT box?

'RTFCD!!' This actually made me laugh before I had my coffee this morning, very unusual indeed. Definitely words to live by. Bob K6GGO Steve - Um, if you would bother to look at your B-Line CD, in the MISC directory, there is a file called 'PB Tuner Mechanical'. Hidden in there is a

Re: [Drakelist] Copper chassis restoration

Hi Steve, I have had some limited success with Naval jelly. It seems to stop and remove the rust pretty well. Like you said, it isn't going to look like new. Whatever damage the rust did will still be there (pitting, bare steel etc.). But, it is much cleaner looking after it is cleaned up.

Re: [Drakelist] thoughts

Hi Ron, I remember reading a tip once on one of these lists about tuning your transmitter by putting it in spot mode and finding the signal with your receiver and peaking the pre-selector and the plate using the receiver's s-meter. Well, it worked ok for me on the pre-selector, but I could

[Drakelist] Looking for Clean B-Line

Hi Guys, I am looking to buy a clean Drake B-line, or a clean R-4B and I will add the T-4XB later. I might be willing to trade a nearly new Flex 3000 for a nice B-line and some dollars. Otherwise, I would just like to buy a clean B-line or the pieces thereof outright for cash. Thanks for

Re: [Drakelist] AC-4R kit

I've built two AC-4R's with Mike's kits and they worked fine right away. I got stuck a couple of times, but with a quick check of the schematic and an application of a bit of common sense I got through it. It really wasn't that difficult to figure out. He provides a great product and I haven't

Re: [Drakelist] AM Filters for the R4C

Hi Kevin, I have an R-4C and a TR-7. The R-4C just has a resistor in the AM slot. Whereas the TR-7 has an actual 6KHZ filter in it's AM slot. I have to admit the AM does sound better with the filter (less noise, all signal). There is a company named INRAD (nice folks) that will sell you a

Re: [Drakelist] Slug Tuning Club

Hi Curt, I was thinking of buying one of those at one time. While collecting info, I found that one of the R390A gurus had made a couple of videos about the dissassembly, care and feeding of the beasts. These were like 8 or 12 hours of video so probably very detailed. They are for sale

[Drakelist] Low power out on 15 meters ( 10 meters too)

Hi Guys, I was up checking out activity on 17 meters today. There wasn't much. Surprise surprise, but it reminded me of a problem my T-4XC has. I have been ignoring this issue for a while now because the bands have been so dead. I tuned up the transmitter so I could call CQ on 17 meters today

[Drakelist] Carrier Oscillator Issues

Hi Guys, I have a T-4XC that I thought I repaired. I replaced the crystal on the carrier oscillator board. I was then able to bring the oscillator on frequency with C-6. I put the transmitter through some testing before I put the covers back on and I noticed that the carrier oscillator changes

[Drakelist] Crystal Needed

Hi Guys, I have a T-4XC that has a carrier oscillator that C6 won't bring on frequency. Looks like I need a new crystal, eh? It looks like C6 is swinging the freq about 200hz but it is from 5644.55 to5644.33 or about 600hz low. When I turn on my transmitter it changes the R-4C freq

[Drakelist] T-4XC Mystery

Hi Guys, About a month ago I was in a CW QSO using my C-line twins. While transmitting I was getting a little long winded, nothing outrageous, my transmission lasted maybe 1.5 minutes at the most when a quite visible puff of smoke arose from the T-4XC and the panel lights went out. Every

Re: [Drakelist] T-4XC Mystery

Service Supplement CDs www.k4oah.com Robert Fish wrote: Hi Guys, About a month ago I was in a CW QSO using my C-line twins. While transmitting I was getting a little long winded, nothing outrageous, my transmission lasted maybe 1.5 minutes at the most when a quite visible puff of smoke arose from