Re: For Sale Beautiful 4A Line Sacramento, CA
I had a Heathkit SB102 in my 1962 Toyota Land Cruiser.? Worked great!? (My ¡¯62 had a column shift, so lots of room on the ¡®hump¡¯!) ? Joe ¨C W7RKN ? From: [email protected] [mailto:[email protected]] On Behalf Of Steve Wedge, W1ES/4 via groups.io
Subject: Re: [DRAKE-RADIO] For Sale Beautiful 4A Line Sacramento, CA ? Not much room in the 2-seaters for something that large. I did, for a number of years, own Mazda Miatas and I had a Yaesu FT-90 dual-band UHF/VHF rig that fit in there perfectly.? Not too many larger rigs than that would have fit unless they had remote-capable installations.
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Re: For Sale Beautiful 4A Line Sacramento, CA
Not much room in the 2-seaters for something that large.
I did, for a number of years, own Mazda Miatas and I had a Yaesu FT-90 dual-band UHF/VHF rig that fit in there perfectly.? Not too many larger rigs than that would have fit unless they had remote-capable installations.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Thursday, March 30th, 2023 at 6:12 AM, Jim Altman <jaltman636@...> wrote:
I have always wanted to get a TR7 to put mobile in my 1980 Triumph TR8.
73, Jim W4UCK
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On the heath? SB-221,? it too, also has the silly LP filter.? It also has only a 4 position bandswitch for both the kw tank output...and also the tuned input.? ?So no way to add 10m to it, unless you dumped the 15m position, and tapped it for 10m, then used correct values for a 10m tuned input.? ?When the filter is removed from the SB-221,? it screws up all the existing PI net tuned inputs.?
Most 11m ops would simply bypass the bandswitch for the output anyway, then just install a monoband 10m coil, directly between the tune and load caps.? Then modify the 15m tuned input for 11m. Then proceed to blow the amp up anyway...while using AM.? ?With amp tuned to say 1200 w pep out...and a 300 watt? UN-modulated cxr, the? Un modulated cxr eff is only 25%..and the anode diss is triple that, or 900 watts...and bye bye? 3-500Z's.? The fan in it is too small for 900 w CCS anode diss.?
The L4B / L7 isn't much better on AM.? ?The controlled cxr? AM scheme used on the 4 line drake rigs worked good on AM..and was compatible with the L4B / L7.?
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TR7/R7 Extender Boards and Puller
Hi to the group,
Wanted: TR/7R7 complete extender board set.
Thank you.
Chuck - AA5WG
Suttons Bay, Michigan
231-668-1115
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Re: For Sale Beautiful 4A Line Sacramento, CA
I have always wanted to get a TR7 to put mobile in my 1980 Triumph TR8.
73, Jim W4UCK
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Re: How to re-tune a TR 4Cw
I¡¯d say that 100 kHz is definitely a time to retune.?
Normally, on 40, I¡¯d re-dip every 50 kHz, including the driver tuning.?
73,
Steve Wedge, W1ES/4
Time flies like an arrow. Fruit flies like a banana.
Sent from Proton Mail for iOS
On Wed, Mar 29, 2023 at 10:13, Bill Turini via groups.io < Old.OpticalEngineer@...> wrote: How does one re-tune a TR4Cw when moving to a new frequency? ?
There are a lot of videos and documents on tuning a TR4Cw on a specific frequency, but I have not seen any instructions on how to touch up the tuning when going from say 7.160 MHz to 7.258 MHz. ?
I finally have my TR4Cw on-line and can tune it up on a frequency, but:?
* ? ?How do I tell when I've moved too far from the initial frequency and need to retune?
* ? ?How do I touch up the tuning? ?Certainly there has to be a better way than to start from scratch and tune up on the new frequency.
Thanks,
Bill
KA4GAV
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Re: For Sale Beautiful 4A Line Sacramento, CA
HI Doug,
I just use my trusty (now old) iPhone 12 Mini.
A new software release automatically does the "photoshop" cut out of the background
automatically, I love that.? It isn't always able to but the R-4A photo worked pretty well.
73,
Gary
WB6OGD
On 03/29/2023 12:33 AM Doug Crompton WA3DSP <wa3dsp@...> wrote:
Gary,
?Great photos and great looking twins. It is hard to get clear lighted dial and front panel photos. Any secrets?
?
Doug, WA3DSP
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How does one re-tune a TR4Cw when moving to a new frequency? ?
There are a lot of videos and documents on tuning a TR4Cw on a specific frequency, but I have not seen any instructions on how to touch up the tuning when going from say 7.160 MHz to 7.258 MHz. ?
I finally have my TR4Cw on-line and can tune it up on a frequency, but:?
* ? ?How do I tell when I've moved too far from the initial frequency and need to retune?
* ? ?How do I touch up the tuning? ?Certainly there has to be a better way than to start from scratch and tune up on the new frequency.
Thanks,
Bill
KA4GAV
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Re: For Sale Beautiful 4A Line Sacramento, CA
Yeah, it's funny like that.? I just added a 7.5' long desk to fit more rigs.? A friend of mine gave me a Collins S Line that was non-functional and I have got them all working.? I also still have an 11-tube R-4A from that haul that needs an Oak switch and two TenTecs that need work (an Omni V and Omni VI).? Some of the money I'll make will just go into more electronic toys but my Triumph is starting to syphon some of the money (and time).? My goal this year for that is to get the new top installed and? get and install a new interior for it. (that's my "other" TR6).
73,
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Tuesday, March 28th, 2023 at 7:58 PM, wb6ogd <garywinblad@...> wrote:
hi hi, I know how that goes, I am trying toget rid of stuff so I can even find the other stuff! Gary On Mar 28, 2023, at 4:28 PM, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
? I was getting a little tingle. ?I was reading the file you uploaded and, ¡°Hmmm¡ that board looks familiar!¡±??I have the board but had forgotten what it was for. I¡¯ll unearth it and find the parts. Too many ±Ê°ù´ÇÂá±ð³¦³Ù²õ¡
Steve Wedge, W1ES/4
Time flies like an arrow. Fruit flies like a banana.
Sent from Proton Mail for iOS
On Tue, Mar 28, 2023 at 18:19, wb6ogd < garywinblad@...> wrote: My records say I sent you a pcb.
Just after I made the Sherwood boards, another guy was selling completed ones on ebay but I don't see he's still there.
73,
Gary
WB6OGD
?
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Re: For Sale Beautiful 4A Line Sacramento, CA
Gary,
?Great photos and great looking twins. It is hard to get clear lighted dial and front panel photos. Any secrets?
?
Doug, WA3DSP
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Re: For Sale Beautiful 4A Line Sacramento, CA
hi hi, I know how that goes, I am trying to get rid of stuff so I can even find the other stuff! Gary
toggle quoted message
Show quoted text
On Mar 28, 2023, at 4:28 PM, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
? I was getting a little tingle. ?I was reading the file you uploaded and, ¡°Hmmm¡ that board looks familiar!¡±??I have the board but had forgotten what it was for. I¡¯ll unearth it and find the parts. Too many ±Ê°ù´ÇÂá±ð³¦³Ù²õ¡
Steve Wedge, W1ES/4
Time flies like an arrow. Fruit flies like a banana.
Sent from Proton Mail for iOS
On Tue, Mar 28, 2023 at 18:19, wb6ogd < garywinblad@...> wrote: My records say I sent you a pcb.
Just after I made the Sherwood boards, another guy was selling completed ones on ebay but I don't see he's still there.
73,
Gary
WB6OGD
?
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Re: For Sale Beautiful 4A Line Sacramento, CA
I was getting a little tingle. ?I was reading the file you uploaded and, ¡°Hmmm¡ that board looks familiar!¡±??I have the board but had forgotten what it was for. I¡¯ll unearth it and find the parts. Too many ±Ê°ù´ÇÂá±ð³¦³Ù²õ¡
Steve Wedge, W1ES/4
Time flies like an arrow. Fruit flies like a banana.
Sent from Proton Mail for iOS
On Tue, Mar 28, 2023 at 18:19, wb6ogd < garywinblad@...> wrote: My records say I sent you a pcb.
Just after I made the Sherwood boards, another guy was selling completed ones on ebay but I don't see he's still there.
73,
Gary
WB6OGD
?
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Re: Problem with carrier balance pot on T-4XC
I just tried on an old T-4X here..? there doesn't appear to be any stops.? Just turn it back the other way.
73,
Gary
WB6OGD
?
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Re: For Sale Beautiful 4A Line Sacramento, CA
My records say I sent you a pcb.
Just after I made the Sherwood boards, another guy was selling completed ones on ebay but I don't see he's still there.
73,
Gary
WB6OGD
?
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Re: Problem with carrier balance pot on T-4XC
Ok. It makes sense now. Given that nothing appears to be broken, any suggestions on how I can get enough preload on the bearings so that they will turn the armature?
--
Bill N0CU
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Re: For Sale Beautiful 4A Line Sacramento, CA
Can these still be found??
Steve Wedge, W1ES/4
Time flies like an arrow. Fruit flies like a banana.
Sent from Proton Mail for iOS
On Tue, Mar 28, 2023 at 16:31, wb6ogd < garywinblad@...> wrote:
Steve,
Put in the Sherwood product detector mod and I bet it will improve a lot.
It did to my R-4B which is just like your 11 tuber.
The 13 tube R-4A though still has slower nicer AVC and sounds better.
73,
Gary
WB6OGD
On 03/28/2023 4:17 PM Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
That's a nice-looking set!? I have an 11-tube set that's in that sort of shape, too. it does sound great -- even with the SS prod det.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Tuesday, March 28th, 2023 at 3:54 PM, wb6ogd <garywinblad@...> wrote:
For Sale
Almost museum quality Drake 4A line, perfect for your collection or working
station. I bought it from the original owner way back in 1980!
Very few spots on the shiny copper chassis, very few very small scratches
on the smooth black cabinets. Everything works well.
R-4A? 13 tube SN 3790
Remember, the R-4A comes with all 4 filters, Calibrator, Noise Blanker.? Tube
product detector and audio chain and the slowest AVC with the nicest audio.
Converted to the cheaper 6BZ6 RF amp (one wire change).
T-4X SN 10673
T-4X puts out 140 watts on 40m and at least 100watts on 10m.? Finals and
driver were a matched set from Drake I installed in the late '80s but I put
very low hours with careful tuning since then. The T-4X has the Drake designed
FSK mod on the PTO for old school RTTY.
MS-4 speaker with Mil-spec power supply
Power supply is custom built Mil-spec quality by the original Engineer
owner.? It makes the Drake supplies look like they were built by a 5 year old.
It was built for continuous RTTY use, it fits inside the MS-4 speaker just like
the Drake supply.
I just replaced the old tired pilot lights with LEDs so the illumination is
now nice and blue-green with matched intensity.
Comes with original manuals, QA tags, interconnection cables, receipt for
finals.? More photos or info on request.
$750 plus shipping.. or hopefully, pickup or meetup in northern CA.
73,
Gary
WB6OGD
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Re: For Sale Beautiful 4A Line Sacramento, CA
Steve,
Put in the Sherwood product detector mod and I bet it will improve a lot.
It did to my R-4B which is just like your 11 tuber.
The 13 tube R-4A though still has slower nicer AVC and sounds better.
73,
Gary
WB6OGD
On 03/28/2023 4:17 PM Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
That's a nice-looking set!? I have an 11-tube set that's in that sort of shape, too. it does sound great -- even with the SS prod det.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Tuesday, March 28th, 2023 at 3:54 PM, wb6ogd <garywinblad@...> wrote:
For Sale
Almost museum quality Drake 4A line, perfect for your collection or working
station. I bought it from the original owner way back in 1980!
Very few spots on the shiny copper chassis, very few very small scratches
on the smooth black cabinets. Everything works well.
R-4A? 13 tube SN 3790
Remember, the R-4A comes with all 4 filters, Calibrator, Noise Blanker.? Tube
product detector and audio chain and the slowest AVC with the nicest audio.
Converted to the cheaper 6BZ6 RF amp (one wire change).
T-4X SN 10673
T-4X puts out 140 watts on 40m and at least 100watts on 10m.? Finals and
driver were a matched set from Drake I installed in the late '80s but I put
very low hours with careful tuning since then. The T-4X has the Drake designed
FSK mod on the PTO for old school RTTY.
MS-4 speaker with Mil-spec power supply
Power supply is custom built Mil-spec quality by the original Engineer
owner.? It makes the Drake supplies look like they were built by a 5 year old.
It was built for continuous RTTY use, it fits inside the MS-4 speaker just like
the Drake supply.
I just replaced the old tired pilot lights with LEDs so the illumination is
now nice and blue-green with matched intensity.
Comes with original manuals, QA tags, interconnection cables, receipt for
finals.? More photos or info on request.
$750 plus shipping.. or hopefully, pickup or meetup in northern CA.
73,
Gary
WB6OGD
|
Re: For Sale Beautiful 4A Line Sacramento, CA
That's a nice-looking set!? I have an 11-tube set that's in that sort of shape, too. it does sound great -- even with the SS prod det.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Tuesday, March 28th, 2023 at 3:54 PM, wb6ogd <garywinblad@...> wrote:
For Sale
Almost museum quality Drake 4A line, perfect for your collection or working
station. I bought it from the original owner way back in 1980!
Very few spots on the shiny copper chassis, very few very small scratches
on the smooth black cabinets. Everything works well.
R-4A? 13 tube SN 3790
Remember, the R-4A comes with all 4 filters, Calibrator, Noise Blanker.? Tube
product detector and audio chain and the slowest AVC with the nicest audio.
Converted to the cheaper 6BZ6 RF amp (one wire change).
T-4X SN 10673
T-4X puts out 140 watts on 40m and at least 100watts on 10m.? Finals and
driver were a matched set from Drake I installed in the late '80s but I put
very low hours with careful tuning since then. The T-4X has the Drake designed
FSK mod on the PTO for old school RTTY.
MS-4 speaker with Mil-spec power supply
Power supply is custom built Mil-spec quality by the original Engineer
owner.? It makes the Drake supplies look like they were built by a 5 year old.
It was built for continuous RTTY use, it fits inside the MS-4 speaker just like
the Drake supply.
I just replaced the old tired pilot lights with LEDs so the illumination is
now nice and blue-green with matched intensity.
Comes with original manuals, QA tags, interconnection cables, receipt for
finals.? More photos or info on request.
$750 plus shipping.. or hopefully, pickup or meetup in northern CA.
73,
Gary
WB6OGD
|
Re: Problem with carrier balance pot on T-4XC
The behaviour you describe is normal for that component.? The reduction drive will continue to attempt to drive the wiper, even after it has hit its hard stop.? I hope you can get it back together again.
Also, be aware of what the procedure tells you as far as rotation of the main tuning? There are portions of the procedures where they direct you to go "up in frequency" and others where they give you clock directions (CW, CCW/ACW).
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Tuesday, March 28th, 2023 at 3:02 PM, Bill Leonard N0CU <billincolo73@...> wrote:
When I initially checked the carrier balance awhile back it looked like this pot (R21) was set correctly. Today, I attempted to do the filter match alignment (Sec 5.9 in the instruction manual). The instructions call out rotating this pot to max CCW. However, the shaft continuously rotates with no mechanical stop. I then noticed that the resistance value did not change as the shaft was rotated. I disassembled the pot to see what was wrong. The problem seems to be that the bearings don't rotate when the shaft rotates, and since the armature is connected to the shaft via the bearings, the resistance does not change. I have never seen a pot like this and wonder what it is about this circuit that required such an unusual pot? I assume that the preload needed to turn the bearings no longer exists, but I don't see any way to adjust that. Am I missing something? Can I just replace this pot with a standard 200-ohm pot (without the bearings)?
--
Bill N0CU
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The procedures in the manuals call for each to be aligned without being connected to the other.? That is the basic alignment and, with the correct INJ cable, should work equally from the TX or RX as the frequency control.? If there are discrepancies, I would look at the cable first.? The cable material and length were chosen so that the TX and RX keep their alignment when connected together, so if you've done the alignment on both the TX and RX and the TX is giving you less sensitivity, that could indicate a bad cable.
The cables were chosen for a value of capacitance and not for impedance.? Only the INJ cable on the B and earlier sets has this spec.? All other cables can be basic audio-quality cables -- including the RX ANT.? On the C Line, the CAR OSC cable is also made for RF but I'm not certain what its spec was or is.? I've used quality coax for that cable, as the appearance of the factory cables appears to be the same as the INJ cable.
73,
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
------- Original Message -------
On Tuesday, March 28th, 2023 at 12:06 PM, Gregg Lebovitz <gregglebovitz@...> wrote:
Hi Steve,
I have a pretty old, but original inj cable. Do the characteristics change over time? I have been aligning without the connections.
thanks,
gregg
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Gary WB6OGD
Bill Turini
Doug Crompton WA3DSP