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Happy Thanksgiving everyone. Covid and Winter have one positive thing in common - More radio and building time. Stay safe and stay healthy this holiday season.
WA0ITP
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Thanksgiving
Subject: Thanksgiving Marian and I wish you and yours to have a healthy and Happy Thanksgiving Dr. Don W4BWS
God Bless All "Basic Wire Antennas" my new book available for $5 sent to my email address via paypal friends. More info at W4BWS on QRZ.com.
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Re: 60 Meter crystals needed
Bread Board Radio will have the Woodpecker 60 and later the WP40.
www.breadboardradio.com W4FSV I believe.
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Re: 60 Meter crystals needed
Bobby Drummond
For those of you that may have some trouble manipulating image files, here is the same schematic photo as sent earlier but oriented so that one would not have to use software functions to rotate the image for easier viewing. AK4JA
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73 de AK4JA
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Re: 60 Meter crystals needed
Bobby Drummond
RE: programmable crystal IC/chip I mentioned earlier about a QST article that used one in a 30 meter Whisper transmitter. (that was the first incidence I remember hearing about them) I have found the copy that I have. It is the January 2015 QST. pages 47-50. The schematic is on page 48. Unless I am reading the spec sheet wrong for the current version of that chip, the pin out has changed. The schematic shows the chip to be an 8 pin device but from what I can tell the current version is a 4 pin device. It appears the device is a programmed (by DigiKey frequency specified by purchaser) Phase Locked Loop. It appears that it requires 10ms max to "start up" and there is an enable pin. I think, if I read it correctly, that a logic high = output on, logic low = output off At a little over 4 dollars a unit (not including shipping) it will be worth ordering in my case and experimenting with. I would like to see if a logic low/high could be used to "key" the programmable crystal and, if so, what does the waveform look like and how would it sound as a keyed oscillator. I see that the transmitter in this article is using a 10K resistor to reduce the output level and a .01 uf capacitor for coupling and isolation of the chip into the oscillator input of the Gilbert Cell mixer (SA612) Sideband (double) generation is performed in the SA612 and later sent to the amplifier stages of the transmitter. See photo of schematic included below. AK4JA
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73 de AK4JA
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Re: 60 Meter crystals needed
Breadboard Radio of course..... check them out. I have built a few of their neat kits. Lots of fun.
toggle quoted messageShow quoted text
Dave K8WPE since 1960 David J. Wilcox’s iPad
On Nov 24, 2020, at 12:01 PM, bigusmith via groups.io <bigusmith@...> wrote:
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Re: 60 Meter crystals needed
Well, I said phooey on Bomar and bought EPSON SGR-8002DC-PTM crystal replacement oscillators from Digikey for $4.10 each. They are super accurate (better than most crystals) and are direct replacements - except they need 5 volts to operate (no big deal).and won't plug into the crystal sockets, so one needs to make jumper cables to to connect them to the crystal sockets. I will put them in a small project box...probably use a 9 volt source with a resistor or regulator to get the needed 5 volts..That way I can use a 9 volt wall wart in the shack and 9volt battery in the field (back packing, SOTA, Field Day, etc.). Current draw is so low that the battery should last quite a while, but one can always carry spare 9 volt batteries in their pocket or back pack for extended portable operation.
Golly, I'll try anything before I will pay $45 each for crystals!! EuGene, KA5NLY
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Wednesday Evening 40 and 80 meter Nets - Wed, 11/25/2020 20:00-21:00
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 25 November 2020, 20:00 to 21:00, (GMT-06:00) America/Chicago Where:40 and 80 Meters Organizer: jomatlock@... Description: The 40 Meter Net will be at 8:00 pm central time on 7.122 +-. QRM
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Re: 60 Meter crystals needed
Back to the subject of 60 meter crystals:
Well, I tried Bomar Crystals Company for 60 meter crystals and they sent me an e-mail that they can make them, so I sent the an order for a quote on 2crystals each for channels 1, 2, & 3. Here is the cost quote that I received from them: **************************************** Please find below quotation for your review and approval. Custom Radio Crystals for: Homebrew QRP Per your previous email you indicated as below Load capacitance: 30 pF XX = 30 Temp. range: -10/+50C = B Tolerance: 30 PPM = E Stability: 30 PPM = E Mode: Fundamental = 1 Qty: 2 each of BCIEEB130-5.332000 BCIEEB130-5.348000 BCIEEB130-5.358500 Qty: 6 Unit price : $45.00 Lead time: 4 to 6 weeks Please note our Minimum order is $100.00 or 2 xtals @ $50.00 each plus Shipping via US Priority Mail is $10.00 ************************************** Since they are $45 each ($50 if I order only 2 because of minimum order being $100), the full set of 6 would slap me with a $270 bill (plus postage - probably still $10). Since I don't have a money room like Scrooge McDuck, I will have to pass on the Bomar deal and keep searching for a crystal source with affordable prices. EuGene, KA5NLY
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Re: 60 Meter crystals needed
Casey, Who will be carrying that kit? QRPme? 4SQRP? QRP-ARCI? etc? EuGenen Smith KA5NLY
On Monday, November 23, 2020, 11:00:50 PM CST, Casey via groups.io <kc9ih@...> wrote:
the BreadBoard Radio 60 meter Woodpecker is about to debut. It is not a beginner's kit. 72 de Casey KC9IH / WD9GKA
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Re: 60 Meter crystals needed
Bobby Drummond
Hope it see it soon (knock on wood) AK4JA
the BreadBoard Radio 60 meter Woodpecker is about to debut. It is not a beginner's kit. --
73 de AK4JA
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Re: 60 Meter crystals needed
the BreadBoard Radio 60 meter Woodpecker is about to debut. It is not a beginner's kit.
72 de Casey KC9IH / WD9GKA
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Re: 4SQRP] 30 Meter Hilltopper Kit & More
I think that the problem with SMT kits will be in IDing the various components at the build stage.
toggle quoted messageShow quoted text
I have only built a few projects that require SMT and got the hang of it quickly but at 77 I confess that my eyes are not quite what they used to be AND from what I’ve read some parts actually don’t have any ID on them so it’s difficult for the kitter and the kit builder. Perhaps a dot of color and separate packages for caps and resistors ? One does need some steady hands and eye assistance but the results are worth the effort. John
On Nov 23, 2020, at 20:30, Andy - GM0NWI via groups.io <andy.gm0nwi1@...> wrote:
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Re: 30 Meter Hilltopper Kit
Charles W. Powell
Why not? Maybe 60m as well! Chas - NK8O
On 11/23/20 6:47 PM, Johnny AC0BQ
wrote:
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Re: Soldering Iron Temperature
Michael McEwen
I've used the jelly jar/steel wool gadget for over 40 years...it's great. Happy Thanksgiving...72/74 Doc K5OSA
On Mon, Nov 23, 2020, 18:37 Cliff Fox (KU4GW) <cliffku4gw@...> wrote: Those were some great soldering tips Ron! Thanks! I wanted to tell you about a tip cleaner I discovered that works great. I saw the stuff they sell on Amazon that has steel wool in a snap closed container. Well, my 79 year old mom uses these things for scrubbing pots and dishes called Scotchbrite Stainless Steel Scrubbing Pads that are made from coarsely shredded stainless steel. I took one of them and stuffed it down inside a small jelly jar and it works great for cleaning the tip on my iron. Just push it into it over and over 2-3 times and the tip looks like brand new!
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Re: Soldering Iron Temperature
AndyH
Great question, Woody!
toggle quoted messageShow quoted text
I'll toss my thoughts in the jar as well - should make the mud that much more rich! hihihi I use a Weller WES51 soldering iron with an analog temp dial on the front. For SMD work from 1206 to 0403, and for through-hole assembly, I use 650° F and Radio Shack 62/36/2 silver bearing solder. I sometimes have to take the temp to 700 or 750, or switch from a thin pencil to a larger chisel tip in order to attach parts to copper-fill grounds that don't have thermal relief pads. I try to keep the heat to a 2 second count at most and will tweak the temp and/or the tip to keep that approximate rhythm. I hope that's useful. 73, Andy, KG5RKP
On Sat, Nov 21, 2020 at 02:11 PM, Woody Hester wrote: Questions for experienced builders who have a soldering station that allows the temperature of the tip to be adjusted.
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Wednesday Evening 40 and 80 meter Nets - Wed, 11/25/2020 20:00-21:00
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 25 November 2020, 20:00 to 21:00, (GMT-06:00) America/Chicago Where:40 and 80 Meters Organizer: jomatlock@... Description: The 40 Meter Net will be at 8:00 pm central time on 7.122 +-. QRM
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Re: 30 Meter Hilltopper Kit
No, No, Not yet!! Not until there is a Hilltopper-60!! EuGene, KA5NLY
On Monday, November 23, 2020, 6:33:36 PM CST, Gary E. Kohtala via groups.io <gary.k7ek@...> wrote:
Now all we need is a Hilltopper-80 to round out the set.  Best regards, Gary, K7EK
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4SQRP] 30 Meter Hilltopper Kit & More
For whats worth, not much probably !
I’d love to see them complete-everything-you-need SMD Kit Form Once even the oldest or novice ham practices in tranquil surrounding i think even they would become accomplished constructors Everythings getting smaller in footprint in our world so why not be the folks to give confidence in abundance as a club designing state-of-the-art SMDKits ? OR BRINGING BACK KITTED things Like Norcal Sierra - NC-20/30/40 A new “ Build It Your Complete Kit Of Needed Bits “ to construct a small-footprint “ Bug “ ! Loads ! Of Options I myself have put out the idea many a time for a club to do-things with the north ottawa qrp club ( micro model only ) touch-paddle With things that could be added etc Alas to no avail put down like a horse no longer required for the job This is only thought on the SMD package but if folks had a lil’ smt tool supply along with their everyday soldering tools Then kits would more requested & tried as the fear factor would deminish 72’s 73’s Andy -GM0NWI
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Re: 30 Meter Hilltopper Kit
Hello Gary I don’t know if they can be modified for that band? But, it is a thought! 72 Johnny ACØBQ
On Mon, Nov 23, 2020 at 6:33 PM Gary E. Kohtala via groups.io <gary.k7ek=yahoo.com@groups.io> wrote:
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Check out the 4SQRP website at 4sqrp.com
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