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R4C BFO leakage into 50Khz IF
I've seen an article about this topic and unfortunately cannot find the document. The receiver has been "on the shelf" in an air conditioned shack for about 20 years and now I've been going through
By Lionel B · #56747 ·
Re: 2B Crystals
John, Correction concerning series resonant overtone specification: the 2-B manual clearly specifies third overtone for all crystal frequencies at and above 18.0 MHz on page 11. 73, Michael Smith
By Michael Smith · #56746 ·
Re: Where to buy solder?
Here it is and this is good stuff. https://www.kester.com/products/product/88-flux-cored-wire On Thursday, April 22, 2021, 8:51:18 AM EDT, amfone via groups.io <amfone20000@...> wrote:
By amfone · #56745 ·
Re: Where to buy solder?
Isn't there a Kester 88 too which works very well? TimWB8UHZ
By amfone · #56744 ·
Re: Looking for a good working 3-500Z
I have a new on from RF-Parts. Got it to build an amp and never did. PM me.
By George LaBelle <george.labelle@...> · #56743 ·
Re: 2B Crystals
John, Additional thoughts concerning my reply yesterday: Concerning the greater output of the oscillator with the new crystal, rather than a fundamental-optimized crystal, I expect that this new
By Michael Smith · #56742 ·
Re: Where to buy solder?
Kester Solder is now owned by Illinois Tool Works (ITW) For a number of years, Kester sold Pocket Paks for Electronics Hobbyists, in smaller sizes. NTE asked Kester to continue this product line, a
By Greg W9GB · #56741 ·
Re: Where to buy solder?
I have? 3? x? 1 lb rolls of the old stuff...and a bit left on the end of a? 5 lb roll.? ?I shoulda snagged some more when I had the chance. The new? rohs? compliant stuff melts a full 38 deg
By Jim VE7RF · #56740 ·
Looking for a good working 3-500Z
Hi. As per title.... I am looking to buy a good working 3-500Z. Someone who may have one in excess to his needs? Will pay via Paypal shipping to Miami, Fl. This is for my recently restored Drake L75.
By Roberto - YS1RS · #56739 ·
Re: 2B Crystals
John, Sometimes more is not better. ?As you are seeing a significantly larger grid-leak bias magnitude, this indicates the feedback voltage to the oscillator grid is larger, which indicates the
By Michael Smith · #56738 ·
Re: Where to buy solder?
Alpha Metals has a 60/40 rosin core solder available through Amazon. I just bought a 4 ounce spool to replace Alpha solder purchased many years ago and it appears to be the same product. According to
By Kent AA6P · #56737 ·
Re: 2B Crystals
N4KZO de K8NN Michael: Well, sometimes it actually is a weak and intermittent crystal.? Received the new 18Mhz crystal from WD8DAS, popped it in and boy did it take right off.? Checked the negative
Re: WANTED: 811A or 572B Tubes
Dennis, I have seen very few failures of the RF Parts 572 tubes. Yes, they are Chinese, but very good quality. Almost all 572 failures I have seen no matter the manufacturer, has been from user abuse,
By Joe - W7RKN · #56735 ·
WANTED: 811A or 572B Tubes
WANTED! 811-A or 572B tubes for my beloved "American Legacy Station..." a TR-7 driving a (ooops...another brand!) linear. Will consider either singles, or a full quad set. Can be used/tested good or
By Diogenio · #56734 ·
Re: Replacement of #12 Fuse Bulb
Page 3 of this document list several places to get them. http://www.wb4hfn.com/DRAKE/TechEX-032021.pdf.pdf 73's, Mark, WB0IQK
By Mark - WB0IQK · #56733 ·
Re: Replacement of #12 Fuse Bulb
Thanks for all the input. After doing some more research, I found several of them online. Just had to look a little harder. Cheers, Marc-k7wxk
By k7wxk · #56732 ·
Re: Replacement of #12 Fuse Bulb
Or a nearby lightning strike with the antenna connected. Ben W4SC Sent from Mail for Windows 10 Sent: Tuesday, April 20, 2021 01:16 To: [email protected] Subject: Re: [DRAKE-RADIO] Replacement of
By w4sc <w4sc@...> · #56731 ·
Re: Replacement of #12 Fuse Bulb
The lamp is used to protect the input of the receiver from nearby transmitters when the rig is used mobile. There is really no danger from just shorting out the socket. It is a standard pilot lamp,
By Richard Knoppow · #56730 ·
Re: Replacement of #12 Fuse Bulb
It is actually literally a light bulb. Not a new idea, the PTC characteristic of the filament is taken advantage of for cheap protection. They are available as others have written, but I imagine the
By Jim Shorney · #56729 ·
Re: Replacement of #12 Fuse Bulb
Go to wb4hfn website they are listed there on a replacement parts page. Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
By Tony Deprato <tony.deprato@...> · #56728 ·