[Boatanchors] Boatanchors Digest, Vol 177, Issue 19
Bob
superpro600 at gmail.com
Wed Oct 31 17:27:47 EDT 2018
Does anyone know which 6SA7 is the mixer tube for an SX-28 out of the two
of them? The manual says to inject 455 khz into terminal #8 of the mixer
tube 6SA7, I assume terminal #8 means pin 8?
Thanks,
Bob kb1okl
On Wed, Oct 31, 2018 at 11:56 AM <boatanchors-request at mailman.qth.net>
wrote:
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> Today's Topics:
>
> 1. Re: Converter info (RAY FRIESS)
> 2. Re: Converter info (Bill Cromwell)
> 3. Solar 5 dot color code. (Brian Goldsmith)
> 4. R390A top and bottom cover sets and UTAH covers for sale
> (John Flood)
>
>
>
> ---------- Forwarded message ----------
> From: RAY FRIESS <rayfrijr at msn.com>
> To: boatanchors <boatanchors at mailman.qth.net>, Boatanchors QTH <
> boatanchors at qth.net>, Glen Zook <gzook at yahoo.com>
> Cc:
> Bcc:
> Date: Mon, 29 Oct 2018 16:43:00 +0000
> Subject: Re: [Boatanchors] Converter info
> Looks like I am about 90% toward getting the 6 meter converter going that
> I pulled off of an old homebrewed rig. Thanks to the great advice and help
> I got from you folks here, I have the spec sheet and the schematic for this
> International FCV-2, model 50. Now, I just need to locate a 6BQ7A tube for
> it. The 6U8 is still on board. Our good friend here Glen Zook says a 6ES8
> will also sub for it.
>
> SO .. if anyone has a spare of either that they are willing to part with,
> let me know. I'll be glad to pay a fair price, or if you have several
> extra and just want to give one away, I'll pay for postage.
>
> I have an Ameco power supply that was used for their 6 and 2 meter
> converters that will work to power the converter, and if it comes down to
> needing to, I have the transformer from the homebrew the converter came on,
> and I can whip up a small power supply. That's why I say 90% there to
> firing this converter up and deciding which receiver I'm going to pair it
> up with.
> Ray wa7itz
> ________________________________
> From: Glen Zook <gzook at yahoo.com>
> Sent: Saturday, October 27, 2018 4:52 PM
> To: RAY FRIESS; boatanchors; Boatanchors QTH
> Subject: Re: [Boatanchors] Converter info
>
> The circuit should be very close to the Ameco CB-6. The manual shows a
> 6ES8 as the r.f. stage. However, the 6ES8 is just a slightly lower noise
> version of the 6BQ7. The tube "pin out" is the same and you can substitute
> one for the other with the difference in performance hard to measure.
>
>
> Here is the BAMA URL for the Ameco CB-6:
>
>
> http://bama.edebris.com/manuals/ameco/cb6
>
>
> Glen, K9STH
>
> Website: http://k9sth.net
>
>
> ________________________________
> From: RAY FRIESS <rayfrijr at msn.com>
> To: boatanchors <boatanchors at mailman.qth.net>; Boatanchors QTH <
> boatanchors at qth.net>
> Sent: Saturday, October 27, 2018 5:13 PM
> Subject: [Boatanchors] Converter info
>
> I'm hoping someone can help me. I have an old old homebrew rig which is
> labeled as being a 6 meter transverter. On the chassis is a PC board that
> says International FCV-2. It is missing one tube, but has a 43 mhz crystal
> in it, so if it is in fact six meters, I suspect a 40 meter IF output.
> I've searched online, and while I found an old International Crystal
> catalog, there is nothing in it about converters.
> Any comments, help, or thoughts would be appreciated. I did find one
> reference online in an email from a ham who had one and he indicated in the
> post that his had a 6BQ7A as an RF amp, and a 6U8 as an oscillator, but
> that was the extent of it. He was also looking for a manual years ago...
>
>
>
>
>
>
> ---------- Forwarded message ----------
> From: Bill Cromwell <wrcromwell at gmail.com>
> To: boatanchors at mailman.qth.net
> Cc:
> Bcc:
> Date: Mon, 29 Oct 2018 13:57:21 -0400
> Subject: Re: [Boatanchors] Converter info
> Hi Ray,
>
> My database says I have a 6BQ7 tube. It's yours if you still need. My
> tubes are mixed NOS and used pulls. There is no way to know which is
> which any more. So consider them all used. I will run any tubes over the
> tube tester to avoid gross failures. If your address is good on QRZ I'll
> get them coming your way if want them. I will send two so you have a spare.
>
> 73,
>
> Bill KU8H
>
> On 10/29/2018 12:43 PM, RAY FRIESS wrote:
> > Looks like I am about 90% toward getting the 6 meter converter going
> that I pulled off of an old homebrewed rig. Thanks to the great advice and
> help I got from you folks here, I have the spec sheet and the schematic for
> this International FCV-2, model 50. Now, I just need to locate a 6BQ7A
> tube for it. The 6U8 is still on board. Our good friend here Glen Zook
> says a 6ES8 will also sub for it.
> >
> > SO .. if anyone has a spare of either that they are willing to part
> with, let me know. I'll be glad to pay a fair price, or if you have
> several extra and just want to give one away, I'll pay for postage.
> >
> > I have an Ameco power supply that was used for their 6 and 2 meter
> converters that will work to power the converter, and if it comes down to
> needing to, I have the transformer from the homebrew the converter came on,
> and I can whip up a small power supply. That's why I say 90% there to
> firing this converter up and deciding which receiver I'm going to pair it
> up with.
> > Ray wa7itz
>
>
> --
> bark less - wag more
>
>
>
>
> ---------- Forwarded message ----------
> From: Brian Goldsmith <brian at flex-tel.com.au>
> To: "boatanchors at mailman.qth.net" <boatanchors at mailman.qth.net>
> Cc:
> Bcc:
> Date: Tue, 30 Oct 2018 08:30:06 +0000
> Subject: [Boatanchors] Solar 5 dot color code.
> To the various folk who kindly responded to my request for Solar 5 dot
> color codes,many thanks,greatly appreciated.
> There is a twist in the tail,the Solar brand mica caps did indeed have a 6
> dot color code.I could not reconcile all the sent data with what I had in
> front of my eyes.
> Then,BINGO,I used some circuit board cleaner to remove the copious
> quantities of old solder flux (and,I suspect,MFP residue).
> There on the face of the cap was the missing dot although,it had no molded
> circle for the 2nd significant figure.
> The Solar people had simply dabbed a color dot onto the body of the cap
> making what ever the original 5 dot system into a 6 "dot" system.
> As it happens,not one of the caps had any leakage at 500V but were wildly
> off in the actual capacitance measurement.
> Again,many thanks from downunder.
> Brian g
>
>
>
>
> ---------- Forwarded message ----------
> From: John Flood <kb1fqg at yahoo.com>
> To: MilSurplus QSLNet <milsurplus at mailman.qth.net>, BoatAnchors QTH <
> boatanchors at mailman.qth.net>, R-390 Forum <r-390 at mailman.qth.net>
> Cc:
> Bcc:
> Date: Wed, 31 Oct 2018 15:55:45 +0000 (UTC)
> Subject: [Boatanchors] R390A top and bottom cover sets and UTAH covers for
> sale
> Greetings,
> "Averaged circulated condition" :) Normal scuffs and scratches about 25
> pairs available. $69.00 per set includes shipping with insurance and
> tracking to the "Lower 48"(my choice UPS or USPS Priority Mail) No, I wont
> send you photos of all 25 sets for you to cherry pick. Payment via USPS
> money order. Sorry but the Commonfilth of MA requires Paypal to send 1099
> forms to us here in MA now :(
> UTAH covers $40.00 includes shipping with insurance and tracking to the
> "Lower 48" several available.
> John Flood N1JAF978-979-2807
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