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Re: Replacing SBL-1 with hand built mixer?
Diz used to sell a DBM kit: https://www.kitsandparts.com/drm.php I used a couple in project and they worked well. Although he no longer sells this kit, his design might provide some food for thought.
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Graham <colonelkrypton@...>
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#314
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Re: Replacing SBL-1 with hand built mixer?
Thank you, gents! I appreciate the assistance and understanding. Given the low-buck nature of anything I do, I'm quite alright with a hand built mixer vs a pre-made mixer, even if it is smaller and
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Ryan Flowers
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#313
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Re: OT: WIFI RFI?
Switch-mode, consumer grade power "cubes" (AKA: Wall Warts) are a menace and, to a lesser degree, any consumer grade device containing a microprocessor. Most Internet modems, routers and other network
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sigcom1
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#312
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Re: OT: WIFI RFI?
My thoughts are with the switching power supply. Test it with a test load, anything really.
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Ryan Flowers
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#311
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Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
Thanks Nick. That¡¯s quite an ambitious project. Mike K5ESS Sent: Sunday, November 24, 2019 8:13 AM To: [email protected] Subject: Re: [qrptech] "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
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K5ESS
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#310
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Re: OT: WIFI RFI?
Hi Curt, A 3 pound sledge hammer comes quickly to mind. But then you will be without your WIFI :( Lucky me - I don't hear my WIFI in my radios. The router is halfway to the other end of the house. My
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Bill Cromwell
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#309
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Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
See AA0ZZ's article on the IQ Pro with the AD9854 in the May/June 2006 QST. http://aa0zz.com/ 73- Nick, WA5BDU [email protected]> wrote:
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Nick Kennedy
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#308
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Re: Replacing SBL-1 with hand built mixer?
Ryan, What you suggest is just what Farhan has done with his BITX and uBITX radios. Ben, K0IKR
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Ben Bangerter, K0IKR
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#307
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OT: WIFI RFI?
Since this is a "tech" group, want to know if others have experienced and solved WIFI RFI. I own a Netgear 6300 "Smart" WIFI router that is located inside the shack on desk near the operating
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Curt
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#306
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Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
Has anyone used an AD9854 DDS to provide a quadrature LO? Mike K5ESS Sent: Thursday, November 21, 2019 6:44 PM To: [email protected] Subject: Re: [qrptech] "A Binaural IQ Receiver" QST Mar 1999
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K5ESS
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#305
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Re: Replacing SBL-1 with hand built mixer?
What Kirk said. I will add: size.? Unless you have teeny-tiny fingers :-P you won't be able to duplicate an SBL-1, HA! However, for ham HF use and if assembled properly, a HB DBM will function just
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sigcom1
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#304
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Re: Replacing SBL-1 with hand built mixer?
Hey, Ryan, The schematic looks exactly like a double-balanced mixer because it is! :)?? Exactly. And yes, you can build your own, but you may not experience the same level of performance with your
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Kirk Kleinschmidt, NT0Z
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#303
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Replacing SBL-1 with hand built mixer?
Hi everyone, I'm looking at many circuits and I see the ones that reference using the SBL-1 mixer. Is there any reason not to just build a double balanced diode ring mixer with discrete components
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Ryan Flowers
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#302
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Re: Thank you, Ryan
My sincere pleasure. Thanks for joining :) -- Ryan Flowers W7RLF https://miscdotgeek.com
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Ryan Flowers
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#301
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Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
One alternative to phasing networks in quadrature downconverters is to use two sources with a common reference, on the same frequency but 90 degrees out of phase. You can do this with a dual DDS IC or
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Bob N1RC
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#300
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Re: NP0 Capacitors for QRP homebrew
I wouldn't trust the "Hilitich" kit, or whatever that is. I buy mostly monolythic ceramic caps, Class 1 NP0/C0G temp coefficient for VFO and filter use, and Class 2 X7R monolythics for bypass and
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Ted KX4OM
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#299
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Re: NP0 Capacitors for QRP homebrew
Another vote for DIZ. www.kitsandparts.com ( http://www.kitsandparts.com )
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Doug W
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#298
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Re: NP0 Capacitors for QRP homebrew
It's likely that the low value capacitors (under 1nF) actually are NP0 capacitors, because most ceramic caps in those values are. But the kit doesn't specify it so I would be wary. wrote:
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Shirley Dulcey KE1L
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#297
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Re: NP0 Capacitors for QRP homebrew
Ryan, Caveat: I have not purchased much from Mouser or similar houses. Do not know what the state of your junk box is, but don't panic and worry about "kits" -- unless someone points out a great
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k6whp
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#296
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Re: NP0 Capacitors for QRP homebrew
www.kitsandparts.com is the first place I look for such caps. He doesn't offer kits though. Steve
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Steve Ratzlaff
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#295
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