Re: [Boatanchors] Navigator and Heathkit A-1 Meters

[rgroh]

Probably not (well, other than putting a better meter in!!).  I also find the 
meter banging around to be a real PITA but, in my mental musings, I haven't 
thought of any way to tame the beast. You could use an RC network (sort of a 
slow attack quick discharge) but that would take some fiddling around with.  
Basically you have, in the meter, a mechanical system with a 'huge' amount 
of overshoot.  You hit the meter with a quick shot of current and it goes way 
over and then settles back to the right reading.  The ONLY way to cure that is 
to slow down the current rise. Then, of course, you have to worry about the 
what happens when the drive current goes down - you don't want to have too much 
'hang'.  Plus the next part of the problem is that meter resistance is fairly 
low - so you are limited in how much R (as part of your RC network) you can put 
in series with meter.  So the R needs to be a low value.  Which means the C 
needs to be big'ish. I thought about playing around with this on the bench but 
... well, just one more thing I won't get to. 
73Bob Groh, WA2CKY 

On Friday, October 14, 2016 9:55 AM, Gary Franklin  
wrote:
 

 Is there a solution for snubbing/taming  the meter action on the Johnson 
Navigator and Heathkit AT-1 meters?

Gary

K8BKB

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[Boatanchors] FS: NRI Model 70 Tube Tester $40 plus shipping.

[rgroh]

More goodies from the ham shack.  I've had this National Radio Institute model 
70 Tube tester for a few years.  I have just refinished the wood case and, 
since I have a couple of other tube testers, it is a good time to sell this 
one. I can send a link to a web photo album to anyone who is interested. I have 
used more than a few times over the years and certainly seems to get the job 
done.  Not as comprehensive a check as a high end tester but adequate for sure. 

Asking $40 plus shipping ( I would estimate shipping at less than $25 via UPS 
Ground).  If you are interested, drop me a line.
73Bob Groh, WA2CKY

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[Boatanchors] FS: vintage 10M mobile AM VFO transmitter

[rgroh]

Yeah, I am a bit sentimental about this rig.  It dates from (I think) the 
mid-1950's.  It was given to me by a friend (now SK) and was, in turn, given to 
him by another local (i.e. Kansas City area) ham 'back in the day'. The 
original article was in CQ Magazine, June 1950. The tube line up was 6AK5 to 
6C4 to 12AQ5 final with 6AQ6 modulator (I think the 12V final was added in 
1958).  A web-based photo album is available (email for the link - this list 
won't pass through web links). I even have the original carbon mike which will 
be included as well as a photo copy of the original CQ article and a photo of 
the original schematic. 

I would like to find someone who will keep this old gal going and not just tear 
it down or whatever. I have way too many projects and want to find a good home 
for this. 

Price: $35 plus shipping (which I guesstimate should be less than $25 - US only 
please).  

Drop me a line if you are interested. 

73 and thanksBob Groh, WA2CKY

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[Boatanchors] Just finished restoration of an EF Johnson TR switch

[rgroh]

Just had to crow about (finally) finishing restoration of a E.F.Johnson T-R 
switch (#250-39).  It was really a minor restoration as basic unit was in 
pretty good shape - the only marginal thing was the case exterior which was 
originally a 'chromed' finish (not chrome but some sort of bright finish on 
steel) which was flaking and not looking very good. I lightly sanded the 
exterior to clean it and then spray painted it with Krylon black paint (it was 
the only color I had!).
The repainting was 4 years ago (!! Yeah, I know ... pretty much a slacker on 
this stuff) and it sat on the shelf until last week.  I finally grabbed it, put 
it on the bench, replaced the ac line cord with a 3-wire only (with ground) and 
reformed the electrolytics.  Back up and running and looking good! Wish I could 
put a photo in this posting but, if you want to see pics, drop me a line and 
I'll send a link to a web album.
73Bob Groh, WA2CKY

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[Boatanchors] FS: Large assortment (about 20 or so) ceramic HV insulators and standoffs

[rgroh]

More cleaning up and 'rationalizing' (i.e. facing up to the fact that I will 
never get to use some of the parts I have been hoarding for all these years!) 
my parts collection.  

This sales is for a bunch (20 or so) ceramic HV insulators and standoffs.  Most 
are HH Smith and most are NOS. 
Group 1: Qty 3 HH Smith 9552Group 2: Qty 3 HH Smith 9540Group 3: Assorted 
insulators, stand offs and hardwareGroup 4: Qty 1 HH Smith 9500 and Qty 6 HH 
Smith 9?44Group 5: Qty 3 HH Smith 9543Group 6: Qty 7 HH Smith 9544
Pictures are on the web and I will be glad to provide a link to the album if 
you contact me. Asking $110 for everything with shipping included(US only - 
contact me for outside US shipping). PayPal preferred but a personal check will 
get the job done with a bit more delay. 

73, 
Bob Groh, WA2CKY
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[Boatanchors] FS: Eico 377 audio generator - a very nice unit for restoration $25 plus shipping

[rgroh]

More cleaning up in the shack.  I have several audio oscillators and this Eico 
377 is, unfortunately, surplus to my needs.  I say 'unfortunate' because it is 
really clean and should be an excellent candidate for restoration.  Pictures 
are in a web album:Eico 377 Photo Album
|   |
|   |  |   |   |   |   |   |
| Picasa Web Albums - Bob Groh - Test EquipmentPhotos by Bob Groh, Apr 10, 2016 
- First item entered is my Eico 377 Audio generator. Very nice and clean unit. |
|  |
| View on picasaweb.google.com | Preview by Yahoo |
|  |
|   |


If you are interested or have questions, just drop me a line.
73Bob Groh, WA2CKY
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[Boatanchors] FS: One lot of hand held microphones

[rgroh]

Email is acting a bit odd today so hoping this get's through ok.
I am cleaning up the ham shack and, among many other items, I have many 
microphones I will never use.  First batch is seven(7) handheld microphones - 
to keep my work down, I am selling them as one lot. A picture and a brief 
description are available in a pdf document - just email me and I will send the 
file your way.  The lot includes two ElectroVoice HiZ dynamics (a 602 and a 
600), a Turner 350 and a 360 ceramic, a Heathkit/Turner, a Japanese Imperial 
DM-2 dynamic and a unknown brand (believe to be a low Z dynamic).  Haven't had 
any opportunity to test any of these but believe they work fine.  Some have mic 
connectors, some don't.  

Price: $75 for all 7 plus shipping.   PayPal preferred but a personal check or 
money order will get the job done too. 

73Bob Groh, WA2CKY
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Re: [Boatanchors] Meissner Signal Shifter 9-1090 Manual Posted

[rgroh]

Excellent!  A welcome addition.  I can stich those together into a single pdf 
file if you would like.
73Bob, WA2CKY
 

On Sunday, February 14, 2016 11:53 AM, "q...@kd4e.com"  
wrote:
 

 A nice Meissner Signal Shifter 9-1090 followed me home
from Hamcation in Orlando.

I believe it is the 1947 model just prior to the EX.

It includes the 160m tuned strip for the turret and
has been recapped and works. Not sure if I will keep
it yet.

It included the original manual with schematics ...
so I took photos of the cover and pages and posted
them here:

http://kd4e.com/kd4e-images/meissner/9-1090manual/

Hope this helps someone.

I'll also post the manual pics to Yahoo at the
Amateur-repairs group.

David KD4E


-- 

*David* KD4E
ARES-EC Bulloch County, Nevils, Georgia USA

Safe & Secure Search Engine: duckduckgo.com

Android for Hams: groups.yahoo.com/group/hamdroid
Creative Tech: groups.yahoo.com/group/ham-macguyver
Raspi Alternative: groups.yahoo.com/group/beagleboneblack/

Restored to design-spec at Heaven's gate 1Cor15:22
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[Boatanchors] GE Ham news

[rgroh]

Cleaning up the office and found 17 or so original copies of GE Ham News - 
publication dates scattered from 1947 through the late 1950s. Interesting 
reading but I would love to see them find a new home. Not sure about postage 
cost but $7 via PayPal will certainly cover me.  If interested, just email me 
and we'll get 'er done.  Happy Thanksgiving to all!
73Bob Groh, WA2CKY

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