Daily GLOWBUGS
Digest: V1 #56
via AB4EL Web Digests @ SunSITE
Purpose: building and operating vacuum tube-based QRP rigs
Subject: glowbugs V1 #56
glowbugs Thursday, June 12 1997 Volume 01 : Number 056
Date: Wed, 11 Jun 1997 21:17:27 -0400 (EDT)
From: leeboo@ct.net (Leon Wiltsey)
Subject: WTB HEADSET
>To gb
>From: leeboo@ct.net (Leon Wiltsey)
>Subject: WTB HEADSET
>Cc:
>Bcc:
>X-Attachments:
>
>hI Gang
>
>looking for a headset 2k ohms or better,
>cant buy anytrhing but hifi stereo stuff here.
>Dont need to be pretty just working ok.
>
THANK THE LORD FOR ALL YOU HAVE
68 yr old semidisabled senior
(stroke got my balance & hand to eye coordination)
ham agn as KF4RCL TECK+ (MUCH HAPPINESS)
BUILD MOST OF MY STATION EQUIP
SUB.BA & GB-- NO SOLID STATE
Leon B Wiltsey (Lee)
4600 Lake Haven BLVD.
Sebring, Fl. 33872
SEBRING FL. WHERE THERE IS NO QRM
FROM ANYTHING LOCAL
Date: 12 Jun 1997 08:46:47 -0400
From: "David McGee" <david_mcgee@maca.sarnoff.com>
Subject: need info on mystery tube
I have acquired a Siemens RS1002A power tube. It appears to be a power
tetrode and looks a lot like a 4-400. Any glowbuggers have a Siemens data
book?
TNX ES 73
Dave W2KV
Date: Thu, 12 Jun 1997 17:30:41 +0000
From: Sandy W5TVW <ebjr@worldnet.att.net>
Subject: FT: Bud wavemeter, EICO dipper
Bud WM-78 'double ended' wavemeter for trade to anyone out there
collecting wavemeters. I'm looking for a Triplett or a Simpson wavemeter
for my 'collection'
Also have an EICO 710 Grid dip meter complete with coils. It's old,
it works.
Condition about a 5 or 6. It is well worn but fully functional. Trade for the
big metal storage box for the Millen Grid Dip meter/coils, or ????
73,
E. V. Sandy Blaize, W5TVW
"Boat Anchors collected, restored, repaired, traded and used!"
417 Ridgewood Drive,
Metairie, LA., 70001
ebjr@worldnet.att.net
**Looking for: 860 tubes, WL-460 tubes**
**Butternut HF2V antenna, G-R test gear.....................***
Date: Thu, 12 Jun 1997 17:30:38 +0000
From: Sandy W5TVW <ebjr@worldnet.att.net>
Subject: SX-71 problem
Hello Glowbuggers/anchorites,
Anybody out there ever have any troubles with oscillation of the RF
stage
in the SX-71 as the gain is advanced to near maximum? (About 80% of full on).
I finally got everything pretty much going in this beast. Still
have some minor problems, but this is a major pain. Tried the common causes
like replacing/bridging
existing by-pass caps, checking resistor values, adding grounds etc. Has anyone
run into this problem during restoration?
I suspect next possibly a bad "RF ground" somewhere. Hallicrafters
rivited the sockets in and included some ground lugs. Beginning to think
this might be a problem
although the meter shows a solid ground. Seems like I've heard of troubles
like this
in the Collins 75A-4, although they used an aluminium chassis, which invites
subtle
corrosion under lugs over so many years.
Ideas anyone who has "Been thru the s..." on this?
Looks like it will be a pretty decent receiver if I can get it
straightened out.
73,
E. V. Sandy Blaize, W5TVW
"Boat Anchors collected, restored, repaired, traded and used!"
417 Ridgewood Drive,
Metairie, LA., 70001
ebjr@worldnet.att.net
**Looking for: 860 tubes, WL-460 tubes**
**Butternut HF2V antenna, G-R test gear.....................***
Date: Thu, 12 Jun 1997 14:40:27 -0500 (CDT)
From: Spencer Petri <spetri@e-tex.com>
Subject: NOS HV Electrolytics FS. (LONG)
One lot of 102 caps FS. Will take offers until 00:00Z 18 June. Each 1 is
one cap.
Sprague Twist-Lok
250/200/30 MFd--165/150/150 V 1
30/30/30 -- 150/150/150 1
30/20/160/40--450/450/250/150 111111111111111
10/140/100/20--450/350/300/300 111
20/15/20/20--450/450/25/25 111
50/20/4/40--450/450/150/25 11
40/30/20/20--400/350/350/350 11111
290/30/10/100--150/150/150/10 1
200-300/200-300--150/150 1
150-200/10-20--350/350 11
100-150/50-100--150/50 1
60-100/40-60--350/350 11
50-120/40-60/20-40/2-5--400/400/400/400 1
470-820/28-47--160/160 1
80-150/50-100--250/250 1
80-120/70-100/20-40/2-5--400/400/400/400 111
280-/5-10--100/300 1
125-200/40/60--350/350 1
20-40/150-250/450/450 1
120/40/40--350/350/350 1
40/30/20--450/450/450 11
125/5/100--350/150/10 1
50-80/90-150/70-120/50-100--450/350/350/50 1
50/20/4--450/450/350 111
20/20/20--450/450/450 1
200/200/60/30--175/175/175/175 111111111
40/80/10--475/450/450 11
70-100/30-5-/10-20/50-100--450/450/450/50 1
250/200/40/10--200/200/200/200 11
100/80/60/50--200/200/200/25 1
80/450/5/60--200/200/175/175 11
80/40/40/40--150/150/150/25 11
160/450/60/5--200/200/200/200 1
200/200/200/30--174/175/175/175 1
50/50/50/20--150/150/150/25 1
20/20/20/20--250/250/250/250 1
250/200/10/10--175/175/150/150 1
80/450/150/5--200/200/175/175 1
250/200/40/10--250/250/250/250 11
850/400/100/4--16/16/4/11.5 1
20/10/5--475/350/150 1
10/4/20--400/350/25 1
30/10/10--450/450/450 1
50/20/4--450/450/450 1
10/4/20--350/350/50 1
400/40/25--350/350/350 1
60/20/40--450/450/350 1
20/20/1000--350/350/15 1
10/80/80--400/450/450 1
20/20/20--450/450/25 1
20/20/20--350/300/25 1
50/160/50--450/250/50 1
150/60/200--300/200/150 11
50/180/300--175/175/175 1
100/10/80--400/400/350 1
150/100--300/150 1
Some have the aluminum mounting plate and the phenolic insulating mounting
plate.
Arcolytic
80/80/100--400/200/50 11
Shipping by buyer.
Thanks.
73 de Pete WA5JCI
*************************************************************************
EM-21--6 Mtr -- WAS #490, WAC CW, DXCC/91 Countries, VUCC #361/618 Grids
*************************************************************************
2 Mtr -- 36 States -- VUCC #346/183 Grids
*******************************************
Date: Thu, 12 Jun 1997 20:15:43 -0500 (CDT)
From: Kevin Pease <hamradio@mm1001.theporch.com>
Subject: Re: SX-71 problem
On Thu, 12 Jun 1997, Sandy W5TVW wrote:
> Hello Glowbuggers/anchorites,
>
> Anybody out there ever have any troubles with oscillation of the RF
> stage
> in the SX-71 as the gain is advanced to near maximum? (About 80% of full on).
I have never had an SX-71 but I ran into a problem like that in my home
brew glow bug receiver here. The RF amplifier would oscilate as the
capacitance on the varriable was reduced. I spent days trying to figure
that out. It turns out that there was no shield between the sections of
the varriable that I was useing so as the capacitance was reduced the
lower plates of the capacitor could see each other and oscilation
resulted.
It might be that you have bad connections on the shields in your varriable
capacitor or possibly bad ground connections on the wipers that connect
the shaft to those shields.
I solved the problem here by building a shield and placeing it between the
sections of the capacitor and eliminating 95 percent of the problem. I
still had to bias the amplifier a little high to make it stable but it now
works super and my little glowbug receiver is not a hot one.
Kevin Pease
WB0JZG
Mount Juliet, TN.
End of glowbugs V1 #56
**********************
Created by Steve Modena, AB4EL
Comments and suggestions to modena@SunSITE.unc.edu