She is probably on vacation or otherwise busy.

Don't panic, put in your order with Paypal, if it never happens you are protected and can

get your money back.

I have not read one thing that says she isn't selling these anymore.

73,

Gary

WB6OGD

On 03/22/2023 9:00 PM Dave via <kc3am=[email protected]> wrote:

I would also like to get one if someone figures out how.

Dave KC3AM

On 3/22/2023 8:55 PM, Ronald Beaver wrote:

I was at the Dalton, GA hamfest and his wife was there selling parts. I'm sure she has CDs available.

Ron WB4OQL?

On Wed, Mar 22, 2023, 12:26 PM Bill Leonard N0CU <billincolo73@...> wrote:

I attempted to order a CD using PayPal. I got a message back from PayPal saying that recipient needed to open a PayPal account and if they don't do that within 10 days the transaction will be cancelled. My email to K4OAH regarding this was not responded to and PayPal eventually cancelled the transaction.
--
Bill N0CU

I attempted to order a CD using PayPal. I got a message back from PayPal saying that recipient needed to open a PayPal account and if they don't do that within 10 days the transaction will be cancelled. My email to K4OAH regarding this was not responded to and PayPal eventually cancelled the transaction.
--
Bill N0CU

I attempted to order a CD using PayPal. I got a message back from PayPal saying that recipient needed to open a PayPal account and if they don't do that within 10 days the transaction will be cancelled. My email to K4OAH regarding this was not responded to and PayPal eventually cancelled the transaction.
--
Bill N0CU

The Collins Collectors Association original?20m net is on or about 14.263 at 2000 UTC on Sunday afternoon. It gets cancelled on major contest weekends via the CCA email list.? I can usually get into this one if I try.

The?CCA? has a plethora of other nets on 80m including?an AM net on the 1st Wednesday of each month.? See here:

This one worked well for me when I lived in VE3, but the western one is out of California and doesn't work so well from southern?BC.

The Kenwood Hybrid nets are as follows;

Saturday on 7.242 mhz at 3:30 pm EST/EDT.

Sunday on 14.316 Mhz at 1800 UTC.

I have checked into the Sunday one on 20m, run by Mark, WB0IQK, with some help from others.? Seems lots of mid-USA and west coasters manage to check in OK, but it helps if you have a beam and 500w+.? I use one of the 30L-1's typically with the Kenwoods and that seems to work. It can get crowded at times on .316 but a regular group gathers for the hour prior to the Sunday net and politely "saves them a spot"!

I rarely ever hear the 40m nets from the east.? A 40m vertical doesn't cut it, and I'm away too much in the winter anyways when it?is a possibility.? Summer is a write-off from BC at that time and distance.

I used to occasionally check into the Drake group out of California - Friday nights I think?? Not really a net....that also does a real-time online video at the same time.? I don't recall the platform they used.? It worked pretty well....but again Fridays tend to be busy days for me into the evening.? I have not checked in for several years now.? Somebody here would likely know more about that one.

I see Mark has just listed the "vintage nets" which are not manufacturer specific.

73

Peter

VE7PS

???

On Wed, Mar 22, 2023 at 5:58?AM Steve Wedge, W1ES/4 via <w1es=[email protected]> wrote:

Why not get some volunteers to start it up on 20?? All we need are a few people willing to take turns being NCS. The harder part will be to find the right time and frequency, since there are likely other regular nets around, and to not schedule it at the same time as other interest group nets that are similar. It would take some coordination and the net itself would likely start slowly.?

For precedent, there are Collins and Kenwood nets on 20, I believe. I am of the opinion that there are many more people interested in Drakes than what existed even a few years ago.?

73,

Steve Wedge, W1ES/4

Time flies like an arrow. Fruit flies like a banana.

Sent from Proton Mail for iOS

On Tue, Mar 21, 2023 at 4:15 PM, Mark - WB0IQK <mgilger@...> wrote:

We tried a 20 meter net many years ago and it never worked out. Very limited check-ins.? We also had a 75m swap net and had to disband that some years ago due to lack of participation.?

73's,
Mark, WB0IQK?

That is the website that I went to.

On Wed, Mar 22, 2023 at 4:59?PM Brien Pepperdine <brianpepperdine@...> wrote:

My old dude memory, which of course never fails, seems to recall his XYL was carrying it on via download sales.

Enter via this web site home page...

One would hope that the page was not left live IF the services were not available more.. but this is a fresh google return.

Brian VE3HI

------ Original Message ------
From: wb5nen=[email protected]
To: [email protected]
Sent: Wednesday, March 22, 2023 5:50 PM
Subject: Re: [DRAKE-RADIO] Drake service CDs no longer available from K4OAH?

I believe Garey is a silent key. He sure helped me a lot.
--
Richard
WB5NEN

My old dude memory, which of course never fails, seems to recall his XYL was carrying it on via download sales.

Enter via this web site home page...

One would hope that the page was not left live IF the services were not available more.. but this is a fresh google return.

Brian VE3HI

------ Original Message ------
From: wb5nen=[email protected]
To: [email protected]
Sent: Wednesday, March 22, 2023 5:50 PM
Subject: Re: [DRAKE-RADIO] Drake service CDs no longer available from K4OAH?

I believe Garey is a silent key. He sure helped me a lot.
--
Richard
WB5NEN

Hi Steve,

?

I used the Sartori “sold tubes” in the 3^rd mixer position for a while until he went out of production.? Then I designed my MIX-4 replacement.? There were two versions with different mixer components (40673 & later the SA602).?

?

Before I figured out how RFI hash was getting into the 3^rd mixer I used a 1:1 120 volt shielded isolation transformer to keep the hash from getting to the receiver.

?

Rob, NC0B

?

From: [email protected] [mailto:[email protected]] On Behalf Of Steve Wedge, W1ES/4 via
Sent: Wednesday, March 22, 2023 11:58 AM
To: [email protected]
Subject: Re: [DRAKE-RADIO] R4C power supply question

?

I definitely noticed the hash on the audio when I bought my first later-production R-4C and spent a fair amount of time trying to tame it.? The location of that third mixer and its design meant that very small differences in shield locations, variations in individual 6EJ7 tubes, etc., were critical to how well the 3rd mixer worked.? I was lucky in that doing the Sartori circuit tamed it enough that I could ignore whatever artefacts were still there.? The early R-4C, with the 6HS6 mixers, didn't have this issue at all.? I agree that the performance of that mixer really threw a wet blanket on the whole experience but I did keep that C Line for a few years and even did some contesting with it.? By that time, we were starting to hear the siren song of the Kenwood TS-930S and I made the switch in the late 80s.

?

I have since discovered that one can cherrypick 6EJ7's from a bunch of NOS tubes and get one that reduces the hash almost enough to not need to change any circuitry.

?

I still love the sharpness of the R-4C filters and have a C Line that works pretty well, stone-stock.

?

73,

?

Steve Wedge, W1ES/4

?

Time flies like an arrow.? Fruit flies like a banana.

?

Sent with secure email.

?

------- Original Message -------
On Wednesday, March 22nd, 2023 at 12:59 PM, Rob Sherwood <rob@...> wrote:

Hi Doug,

?

Please see comments inserted below.

?

Rob, NC0B

?

From: [email protected] [mailto:[email protected]] On Behalf Of Doug Crompton WA3DSP
Sent: Tuesday, March 21, 2023 11:28 PM
To: [email protected]
Subject: Re: [DRAKE-RADIO] R4C power supply question

?

Rob,

Yes I completely rebuilt the supply adding a 7812 regulator board which are dirt cheap on Amazon and elsewhere. I also added an LM380 audio board. again, dirt cheap, and everything runs from regulated 12V. I use 3 diodes in series to lower the low voltage to the 7812 to about 14.5-15 volts and the 7812 loafs along.

?

Reply:? I never used your diode idea, and at least the way I used a copper strap from the 7812 to the chassis, 17 volts into the regulator was a non-issue.? I used the LM-383T which puts out more power than the LM-380, but 100mW produces plenty of audio with a typical high efficiency speaker. I also used the LM-383T in my SE-3 AM sync detector, but running on 18 volts instead of 12 volts.

My R4C never had the C201 as far as I remember although I ripped quite a bit off the power supply board. There is no heat there anymore. I do have some very low level hum that is coming from somewhere ahead of the volume pot. It is absolutely clean with the pot disconnected. It is very low level, but being a purist, I was looking for possible fixes.

?

Reply:? My engineer carefully specified how my LM-383T audio amp board had to have a single ground return. Otherwise there would be a ground-loop hum problem.? That is likely what you are observing.?

I wonder if others have measured filament voltage. I used several digital meters and they all agreed that the filaments were running at about 7.0-7.1 volts. This is with a 121 volt line. I figured I needed about .3 ohms to lower it so I wound about 6 feet of #30 enameled wire on a high value 2W resistor which dropped it about .5 volts or so.

Reply:? Yes the typical filament voltage is slightly higher than +10% above nominal 6.3 volts on most of the hundreds of R-4Cs that came through my shop.? I recently was dealing with an R-4C that took 5 minutes to warm up, and the filament voltage was 6.1 volts.? I never came up with a solution to the slow warmup.? I never found tube life a problem with the elevated filament voltage.?

I was also wondering when the LM380 first came out. The earliest data I can find is an app note dated 1972, so it had to be early in the R4C production, My R4C is SN 28387 which is very close to the end of production in 1976 or later so it certainly could have had a much better power supply and audio amp at that late date.? Think of the space that would have been saved as most of the powers supply and audio boards would have gone away, I guess by 1976 they were working on the TR7 design which used the newer chips.

?

Reply:? Drake is notorious for using big dropping resistors in products.? Look at the L-4B power supply and all the heat in those large resistors.? The TR-7 wasn’t any better with all the heat in regulators sinked to the chassis near the PTO.? Also why put the 100 watt PA right by the PTO??? Why put the R-4C power transformer right behind the PTO?? The earlier Drake R-4, R-4A and R-4B receivers had the power transformer oriented 90 degrees from where it is in the R-4C.? In the R-4C case, the transformer magnetic field couples into the PTO slug-tuned inductor causing hum sidebands on the PTO output. If you operate the PTO outside the radio it has no line-related sidebands.? If you remove the R-4C power transformer, punch two new holes in the chassis, and remount the transformer 90 degrees from normal (as it is in earlier models), the line-related hum sidebands on the PTO signal are drastically lower.? Please see attached PDF from my 2012 Drake Dayton Forum presentation.

?

COMMENTS:? Consider the parts count in the TR-7 DR-7 board with all those TTL chips.? The parts count on that board, and likely many others, could have been drastically reduced, decreasing assembly time and cost.? The change in the R-4C from 6HS6 mixer tubes to 6EJ7s, and the subsequent circuit change for LO injection, was a terrible step backwards.? Any RFI noise on the AC line passed right into the grid of the 3^rd mixer.? That didn’t happen with the 6HS6 circuit.? Drake did well for decades in spite of design errors and the lack of production updates that would have saved money and made the products better. I wonder if the culture at Drake had been more proactive whether the TR-8 would? have had a chance in the market?? David Assaf W5XU is the TR-8 guru, but I don’t know whether a schematic even exists for the TR-8.? Was it designed well?? I? have no idea. ?????

?

73, Rob, NC0B

Doug, WA3DSP

?