Re: 160 Meter 12,6 Mhz Crystal
Lee,? I think I have a extra..? Let me look..
Skip
On Saturday, March 25, 2023 at 01:22:14 PM EDT, Leland L. Bahr <w5drc@...> wrote:
Anyone on here with a spare 12.6 Mhz crystal? (160 meters) for Drake
Twins??? (Not interested in a AF4K crystal)
If so, send details.
Tnx,
Lee, w0vt
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Green is usually glass-epoxy, which is a better substrate.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Saturday, March 25th, 2023 at 10:37 AM, W6MQI via groups.io <w6mqi@...> wrote:
Notice the phenolic on my switch is green which makes no difference, but not sure if I've ever seen green phenolic before.
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160 Meter 12,6 Mhz Crystal
Anyone on here with a spare 12.6 Mhz crystal? (160 meters) for Drake Twins??? (Not interested in a AF4K crystal)
If so, send details.
Tnx,
Lee, w0vt
w5drc@...
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Notice the phenolic on my switch is green which makes no difference, but not sure if I've ever seen green phenolic before.
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Gary,
?Yes sir that's the right wafer section believe it or not I was able to remove mine without removing the front panel, but that may change putting things back together.
Gary my address is good on QRZ I also sent an email to you via this group
Thank You, Sir!?
73, Dave
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Front panel removal is pretty easy. ?Because you¡¯re replacing the last wafer, you¡¯re fortunate. It¡¯ll be plenty of work to actually replace the wafer, though.?
73
Steve Wedge, W1ES/4
Time flies like an arrow. Fruit flies like a banana.
Sent from Proton Mail for iOS
On Fri, Mar 24, 2023 at 10:28 PM, W6MQI via groups.io < w6mqi@...> wrote: Looks like I'm in the market for a parts set or a functioning T4XB.
73, Dave
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TR7 Extender Boards for sale. And a bad DR7 board, maybe.
I was cleaning out my shack and found my set that I bought about 10? years back. Don't recall ever using them.?
I also found a DR7 Board that I blew up and replaced with a new one. Not sure if that is worth anything, but Jim Shorney told me to save it a few years ago. Hi hi. I fried it by leaving the top cover of the TR7 off and keying another radio that was hooked up to a attic antenna directly above.? At least that is what I remember at the time. Maybe a clue as to what may be the issue.
Offers anyone? I'm too tired to google. :-) I may still sell my TR7 also.?
73
Bill
W4WCS
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Getting back to the original topic..
Dave,
I pulled the last section out of my late T-4X.? Does this look like what you need?? Don't worry about the black tarnish, it conducts great I am told.
Wow, it was hard to get it out, to put it back in is going to be a job for you.
As you can see in the photo, I had to pull the front panel to remove the nut holding the switch so I could get a screwdriver and nutdriver in to take the
wafer off.? Before that I had to remove the crystal switch and shaft.
If that is the switch you need, give me your address and I'll send it down.
73,
Gary
WB6OGD
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Looks like I'm in the market for a parts set or a functioning T4XB.
73, Dave
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Re: Drake 2C on 28.0 to 28.5 MHz
THANK YOU
,73,S TOM
On Friday, March 24, 2023, 07:22:15 PM MDT, Brien Pepperdine <brianpepperdine@...> wrote:
FYI..... Look on this page of the Files area I think for some initial FS4 info, as well as page/tab 4 of Files, and perhaps elsewhere in Files looking for FS4 info. In any case, this is the general and specific area for stuff... /g/DRAKE-RADIO/files?p=name%2C%2C%2C20%2C1%2C20%2C0&jump=1
Brian VE3HI
------ Original Message ------
From: ac5rd@...
To: [email protected]
Sent: Friday, March 24, 2023 8:13 PM
Subject: Re: [DRAKE-RADIO] Drake 2C on 28.0 to 28.5 MHz
info regarding your fs-4..
Tom - AC5RD..
73S TNX
On Friday, March 24, 2023, 06:44:53 PM MDT, wb6ogd <garywinblad@...> wrote:
For the cost of one crystal you could build my FS-4 that generates signals to replace all the crystals for HF. 73, Gary WB6OGD On Mar 24, 2023, at 4:56 PM, Rick Arzadon - N8XI via groups.io <n8xi_1@...> wrote:
? I am looking for a Crystal I can insert into the Aux position of the Drake 2C. I believe it is in an HC-6 can and needs to be a 24.5 MHz XTAL. Or an HC-6 can of any frequency that I can take apart and marry a 24.5 MHz HC-49 XTAL to it. Maybe someone may have a different idea? Thanks 73, Rick - KN8RHM (N8XI)
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Re: Drake 2C on 28.0 to 28.5 MHz
FYI..... Look on this page of the Files area I think for some initial FS4 info, as well as page/tab 4 of Files, and perhaps elsewhere in Files looking for FS4 info. In any case, this is the general and specific area for stuff... /g/DRAKE-RADIO/files?p=name%2C%2C%2C20%2C1%2C20%2C0&jump=1
Brian VE3HI
------ Original Message ------
From: ac5rd@...
To: [email protected]
Sent: Friday, March 24, 2023 8:13 PM
Subject: Re: [DRAKE-RADIO] Drake 2C on 28.0 to 28.5 MHz
info regarding your fs-4..
Tom - AC5RD..
73S TNX
On Friday, March 24, 2023, 06:44:53 PM MDT, wb6ogd <garywinblad@...> wrote:
For the cost of one crystal you could build my FS-4 that generates signals to replace all the crystals for HF. 73, Gary WB6OGD On Mar 24, 2023, at 4:56 PM, Rick Arzadon - N8XI via groups.io <n8xi_1@...> wrote:
? I am looking for a Crystal I can insert into the Aux position of the Drake 2C. I believe it is in an HC-6 can and needs to be a 24.5 MHz XTAL. Or an HC-6 can of any frequency that I can take apart and marry a 24.5 MHz HC-49 XTAL to it. Maybe someone may have a different idea? Thanks 73, Rick - KN8RHM (N8XI)
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Re: Drake 2C on 28.0 to 28.5 MHz
info regarding your fs-4..
Tom - AC5RD..
73S TNX
On Friday, March 24, 2023, 06:44:53 PM MDT, wb6ogd <garywinblad@...> wrote:
For the cost of one crystal you could build? my FS-4 that generates signals to replace? all the crystals for HF. 73, Gary? WB6OGD?
On Mar 24, 2023, at 4:56 PM, Rick Arzadon - N8XI via groups.io <n8xi_1@...> wrote:
? I am looking for a Crystal I can insert into the Aux position of the Drake 2C. ? I believe it is in an HC-6 can and needs to be a 24.5 MHz XTAL. ? Or an HC-6 can of any frequency that I can take apart and marry a 24.5 MHz HC-49 XTAL to it. ? Maybe someone may have a different idea? ? Thanks 73, Rick - KN8RHM (N8XI)
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Re: Drake 2C on 28.0 to 28.5 MHz
For the cost of one crystal you could build? my FS-4 that generates signals to replace? all the crystals for HF. 73, Gary? WB6OGD?
toggle quoted message
Show quoted text
On Mar 24, 2023, at 4:56 PM, Rick Arzadon - N8XI via groups.io <n8xi_1@...> wrote:
? I am looking for a Crystal I can insert into the Aux position of the Drake 2C.
?
I believe it is in an HC-6 can and needs to be a 24.5 MHz XTAL.
?
Or an HC-6 can of any frequency that I can take apart and marry a 24.5 MHz HC-49 XTAL to it.
?
Maybe someone may have a different idea?
?
Thanks
73, Rick - KN8RHM (N8XI)
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Re: Drake 2C on 28.0 to 28.5 MHz
Howdy Rick,
Here's where I got mine!
--
73/Rick
WA6III
*Every post is created using Linux
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Drake 2C on 28.0 to 28.5 MHz
I am looking for a Crystal I can insert into the Aux position of the Drake 2C.
?
I believe it is in an HC-6 can and needs to be a 24.5 MHz XTAL.
?
Or an HC-6 can of any frequency that I can take apart and marry a 24.5 MHz HC-49 XTAL to it.
?
Maybe someone may have a different idea?
?
Thanks
73, Rick - KN8RHM (N8XI)
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Re: TR7A and R7A Jumper Boards and Digital Jumper Extender Board
Jim and Pete,
Good information.
Chuck
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What the PROM does is it "monitors" the N-Code fed to the Translator board from the DR7 for two purposes. The first is to disable the action of the Up or Down button when your reach the edge of a band switch segment. This keeps you within the limits of the high pass and low pass filter sections of the band switch. The second is to keep your from transmitting outside of a ham band. It is pretty clever really. The address lines of the PROM follow the N-Code and the contents of the PROM memory at any given address will either enable or disable the buttons as needed and also operate Q9001 to inhibit transmit in 500 KHz segments that do not contain a ham band. The radio will work perfectly well with the PROM removed entirely but you would need to be mindful of the filter edges. Worst case, you could smoke a low pass section by transmitting above it's cutoff frequency or transmit unwanted harmonics. A known failure mode of these PROMS is one of the address lines going shorted which disrupts the N-Codes. This may be from careless handling causing ESD damage as the PROM inputs are tied directly to the male Molex pins on the bottom of the board. PROMs are available if you need one. 73 -Jim NU0C On Fri, 24 Mar 2023 15:11:39 -0700 "kmg53 via groups.io" <kmg53@...> wrote: (Belated) Thanks, Nick. I have time again to work on it. I also have the TR-7 service manual which explains what the chip is doing, but I was unclear about why the two legs were broken. I'll be looking up that chip diagram to see how it does what it does.
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Ken KA4MIE
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Another belated thanks to all others who replied.?
--
Ken KA4MIE
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(Belated) Thanks, Nick. I have time again to work on it. I also have the TR-7 service manual which explains what the chip is doing, but I was unclear about why the two legs were broken. I'll be looking up that chip diagram to see how it does what it does.
--
Ken KA4MIE
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Re: TR-4C Weird Front-End Tuning
I am going to be looking into this, as I have a TR-4Cw RIT that is also doing some squirrely things on 20m.? I can get it to go into what I believe are oscillations on 20m when I adjust the driver, so the first place I'll look will be at the driver circuit.? I also seem to have low output but that may be bad finals.? All will be revealed, once I finish redoing half of my operating position.
73,
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Friday, March 24th, 2023 at 5:22 PM, Mark Nace <n5kae@...> wrote:
Hello Everyone.? I am in the last steps in restoring a TR-4C.? I have found that on 20 meters, at 14.250 MHz, when peaking the Rf tune, I can get somewhat better stronger signals.? BUT, I get much better reception when adjusting the PLATE TUNING CAP to about 7.? When I adjust plate tuning to a lower value, I lose all signals on the band.? I don't think either the plate or loading caps should be interacting with receiver performance.? I have done just about everything in cleaning up the radio, tube checks/replacements, deoxit, and other items, except for an alignment.? Has anyone ever experienced this type of thing?? I have never seen this in all the drakes I have restored.?
Many thanks to the group.....you have helped me countless times in the past!
73
Mark
N5KAE
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Skip
W6MQI
Bill
Gary WB6OGD
Jim Shorney