Send it to the group too.? I have a late T-4X that might be the same.
73,
Gary
WB6OGD
On 03/23/2023 8:14 PM Gary Follett <xntrick1948@...> wrote:
I have a large supply of rotary switch wafers. Can you send me a detailed, in focus photo of your switch wafer, preferably both sides?
Gary
W0DVN
On Mar 23, 2023, at 7:05 PM, W6MQI via groups.io <w6mqi@...> wrote:
I've been going through my B-line the last few weeks and have the R4B running really well such amazing audio compared to the R4C.? So next in line was the T4XB and while cleaning rotary switch contacts I noticed on the back wafer on the function switch part that rotates had a blown-out section from arching in the past. I purchased the twins from a guy about 7 or 8 years ago and never really used them they just sat on the shelf. So if anyone has a spare switch or junker T4XB I'm in the market.? ? Dammit! and I was on the home stretch to completing the B-line restoration.
Dave
... --- ... looking for a spare T4XB function switch
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If you think the R-4B audio is good, you should listen to an R-4A(early).
Unless.. your R-4B has the Sherwood product detector mod.
Notice how your S-meter moves on SSB signals.? If it moves up and down with sylables,
you need the Sherwood mod.
73,
Gary
WB6OGD
On 03/23/2023 8:05 PM W6MQI via groups.io <w6mqi@...> wrote:
I've been going through my B-line the last few weeks and have the R4B running really well such amazing audio compared to the R4C.? So next in line was the T4XB and while cleaning rotary switch contacts I noticed on the back wafer on the function switch part that rotates had a blown-out section from arching in the past. I purchased the twins from a guy about 7 or 8 years ago and never really used them they just sat on the shelf. So if anyone has a spare switch or junker T4XB I'm in the market.? ? Dammit! and I was on the home stretch to completing the B-line restoration.
Dave
... --- ... looking for a spare T4XB function switch
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Re: TR7A and R7A Jumper Boards and Digital Jumper Extender Board
Nice write-up. You found two of the most common TR7 failures, both on the PS board. C2108 us the only capacitor on my "must replace" list for the TR7. It is not a matter of if it fails, but rather when it fails. It lives a pretty hard life. More important than the voltage rating is to use a high quality 105C temperature rated part. I have a stash of 78L24. :) More recent thinking is that it may benefit from a reverse biased protection diode from output to input as shown on many 78xx data sheets. 73 -Jim NU0C On Thu, 23 Mar 2023 20:04:23 -0700 "n6qwhomebrew@..." <hamradiogenius@...> wrote: Follow the Schematic in the Service Manual and build one,
?
See the following link for details of the display jumper board The perfboard and the 0.156 pins are bought from Mouser or Digikey. The perf board is from Vector
?
?
TR-7 Resurrection (n6qw.com)?
?
?
YMMV.
?
73¡¯²õ
Pete N6QW
?
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Peter,
?Not sure if the T4XC is the same it has a 4-wafer switch the T4XB is a 3-wafer switch.? Unfortunately not only is the contact gone, but the wiper has a big chunk missing as well
I think it's done for.
I have a friend that's going to a ham swap this weekend he's also going to look for a junker T4XB so hopefully between everyone, I can get this thing fixed.
Dave
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Re: TR7A and R7A Jumper Boards and Digital Jumper Extender Board
Follow the Schematic in the Service Manual and build one, ? See the following link for details of the display jumper board The perfboard and the 0.156 pins are bought from Mouser or Digikey. The perf board is from Vector ? ? ? ? ? YMMV. ? 73¡¯²õ Pete N6QW ? Sent from for Windows ?
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From: aa5wg via groups.ioSent: Thursday, March 23, 2023 6:13 PM To: [email protected]Subject: [DRAKE-RADIO] TR7A and R7A Jumper Boards and Digital Jumper Extender Board ? Hello to all.
Does anyone know where I might find a complete set of the Jumper/Extender Boards including the Digital jumper/Extender Board for the TR7A, TR7 and R7A radios?
Thank you.
73,
Chuck
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Dave:
If Gary can't help you, I have lots of T-4XC parts that are probably the same.? Get back to me if Gary cannot help.
Even a single contact CAN be replaced, though not an easy exercise!
73 Peter VE7PS
Okay, this will take a while lots of wires to remove and label I'll send pic's tomorrow.
Thanks, Dave
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Re: DRAKE TECHNICAL NET UPDATE ( March 19, 2023 )
On Thu, Mar 23, 2023 at 01:09 PM, Mark - WB0IQK wrote:
2 pm Eastern = Vintage SSB on 14.292.5 mhz
3 pm Eastern = Heathkit net on 14.292.5 mhz
5 pm Eastern = Swan net on 14.292.5 mhz
?
I wish someone would tell me why in the world ANY net for Vintage (or any other HF radio for that matter) would list a "Net" frequency on a 1/2kHz "channel"? Why exclude the vintage Marine, commercial and military and CURRENT aviation type radios (Collins HFS-900S)? radios that only tune in 1kHz steps? Asking for a friend..... ? --
73/Rick
WA6III
*Every post is created using Linux
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Okay, this will take a while lots of wires to remove and label I'll send pic's tomorrow.
Thanks, Dave
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TR7A and R7A Jumper Boards and Digital Jumper Extender Board
Hello to all.
Does anyone know where I might find a complete set of the Jumper/Extender Boards including the Digital jumper/Extender Board for the TR7A, TR7 and R7A radios?
Thank you.
73,
Chuck
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I would have a better chance of success if I could clearly see the contacts on both sides of the bad wafer.
Gary
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On Mar 23, 2023, at 8:10 PM, W6MQI via groups.io <w6mqi@...> wrote:
Do you need the switch wafer removed for pictures or just a picture of the whole switch itself mounted in the radio?
Dave
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Do you need the switch wafer removed for pictures or just a picture of the whole switch itself mounted in the radio?
Dave
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Re: Drake service CDs no longer available from K4OAH?
After reading this thread today and realizing I didn't have the docs for my 2-B, I wrote to Carol at the specified email and got a nice reply 10 minutes later ( ! ). If you go through the listings and prices and put the equipment model you want in the PayPal form, she'll know exactly what you want.
I'm using FFox 111.01. If you are having problems, they have some good security that you may have to turn off or reset. Or maybe you have a useful but annoying extension that's blocking something. Looking at you uBlock Origin.
Otherwise you could use the promiscuous Chrome, which I have banished from my Windows 11 desktop. But it probably works in almost any case (no matter what the Goog says about their security).
Charlie
WB4FAW
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It is good on QTH.
It¡¯s a bi top a chore to replace wafers on a three section switch but at least it¡¯s the rear one.
Gary
W0DVN
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On Mar 23, 2023, at 8:02 PM, W6MQI via groups.io <w6mqi@...> wrote:
[Edited Message Follows]
Gary, ?Is your email on QRZ good? The function switch has three wafers it's the rear most wafer. Dave
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Gary,
?Is your email on QRZ good? The function switch has three wafers it's the rear most wafer.?
Function switch switches CW, TUNE, SSB, AM
Dave
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I have a large supply of rotary switch wafers. Can you send me a detailed, in focus photo of your switch wafer, preferably both sides?
Gary
W0DVN
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On Mar 23, 2023, at 7:05 PM, W6MQI via groups.io <w6mqi@...> wrote:
I've been going through my B-line the last few weeks and have the R4B running really well such amazing audio compared to the R4C.? So next in line was the T4XB and while cleaning rotary switch contacts I noticed on the back wafer on the function switch part that rotates had a blown-out section from arching in the past. I purchased the twins from a guy about 7 or 8 years ago and never really used them they just sat on the shelf. So if anyone has a spare switch or junker T4XB I'm in the market.? ? Dammit! and I was on the home stretch to completing the B-line restoration.
Dave
... --- ... looking for a spare T4XB function switch
|
I've been going through my B-line the last few weeks and have the R4B running really well such amazing audio compared to the R4C.? So next in line was the T4XB and while cleaning rotary switch contacts I noticed on the back wafer on the function switch part that rotates had a blown-out section from arching in the past. I purchased the twins from a guy about 7 or 8 years ago and never really used them they just sat on the shelf. So if anyone has a spare switch or junker T4XB I'm in the market.? ? Dammit! and I was on the home stretch to completing the B-line restoration.
Dave
... --- ... looking for a spare T4XB function switch
|
Re: DRAKE TECHNICAL NET UPDATE ( March 19, 2023 )
Mark, thanks for that information!
I am willing to be a NCS if we can have this on days other than Sunday or Monday. Of course, things work better with additional NCS folk.
What say?
Steve Wedge, W1ES/4
Time flies like an arrow. Fruit flies like a banana.
Sent from Proton Mail for iOS
On Thu, Mar 23, 2023 at 4:09 PM, Mark - WB0IQK < mgilger@...> wrote: Greg,
Thanks for catching that.?
Here are the vintage SSB & AM nets that I know of. There might be more, but these are the ones that I know of.?
73's,
Mark, WB0IQK
SATURDAY:
8:45 am Eastern = No Name Vintage net on 3.977 mhz
9:30 am Eastern = Vintage SSB net on 3.843 mhz
2 pm Eastern = Swan Technical net on 7.242 mhz
3:30 pm Eastern = Kenwood Hybrid net on 7.242 mhz
SUNDAY:
8 am Eastern = DX60 AM net on 3.880 mhz
2 pm UTC = Kenwood Hybrid net ON 14.316 mhz
2 pm Eastern = Vintage SSB on 14.292.5 mhz
3 pm Eastern = Heathkit net on 14.292.5 mhz
2000 UTC = Collins net on 14.363 mhz
5 pm Eastern = Swan net on 14.292.5 mhz
MONDAY:
5 pm Eastern = Vintage SSB net on 3.842 mhz
7 pm Eastern = Vintage AM net on 14.330 mhz (not very active)
TUESDAY:
9 pm Eastern = Collins net on 3.805 mhz
9:30 pm Eastern = Vintage SSB net on 3.895 mhz
WEDNESDAY:?
4 pm Eastern = Swan net on 14.292.5 mhz
5 pm Eastern = Vintage SSB net on 3.870 mhz
6 pm Eastern = Elmac AM net on 3.880 mhz
THURSDAY:
9 pm Eastern = Albuquerque Vintage SSB net on 7.202 mhz
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Re: DRAKE TECHNICAL NET UPDATE ( March 19, 2023 )
Greg,
Thanks for catching that.?
Here are the vintage SSB & AM nets that I know of. There might be more, but these are the ones that I know of. I added the West coast Drake net.?
73's,
Mark, WB0IQK
SATURDAY:
8:45 am Eastern = No Name Vintage net on 3.977 mhz
9:30 am Eastern = Vintage SSB net on 3.843 mhz
2 pm Eastern = Swan Technical net on 7.242 mhz
3:30 pm Eastern = Kenwood Hybrid net on 7.242 mhz
SUNDAY:
8 am Eastern = DX60 AM net on 3.880 mhz
2 pm UTC = Kenwood Hybrid net ON 14.316 mhz
2 pm Eastern = Vintage SSB on 14.292.5 mhz
3 pm Eastern = Heathkit net on 14.292.5 mhz
2000 UTC = Collins net on 14.363 mhz
5 pm Eastern = Swan net on 14.292.5 mhz
MONDAY:
5 pm Eastern = Vintage SSB net on 3.842 mhz
7 pm Eastern = Vintage AM net on 14.330 mhz (not very active)
TUESDAY:
9 pm Eastern = Collins net on 3.805 mhz
9:30 pm Eastern = Vintage SSB net on 3.895 mhz
WEDNESDAY:?
4 pm Eastern = Swan net on 14.292.5 mhz
5 pm Eastern = Vintage SSB net on 3.870 mhz
6 pm Eastern = Elmac AM net on 3.880 mhz
THURSDAY:
9 pm Eastern = Albuquerque Vintage SSB net on 7.202 mhz
7 pm Pacific = Drake West Coast net on 3.895 mhz
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Re: Drake service CDs no longer available from K4OAH?
Via FF version 111.0.1 working for me - likewise in the UK
The CDs are gold, physical or downloaded.
Michael 2E0IHW
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On 23/03/2023 16:11, Mike Millen wrote: I'm using the same (latest) version of Firefox and the link () is working perfectly for me.
Mike - M0MLM
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Gary WB6OGD
Jim Shorney
W6MQI
Charlie Fellenbaum - WB4FAW