Re: {Collins} Collins Digest, Vol 86, Issue 21



might be out of a R648/ARR15 receiver  ??     73, Jim -K$DEE



-----Original Message-----
From: collins-request <collins-request@xxxxxxxxxxxxx>
To: collins <collins@xxxxxxxxxxxxx>
Sent: Sat, Nov 21, 2015 8:52 am
Subject: Collins Digest, Vol 86, Issue 21

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Today's Topics:

   1. 354B-1 (Joe Eide)
   2. KWM-2 Frequency jumps 400 HZ (Ray Gustafson)
   3. Re: KWM-2 Frequency jumps 400 HZ (Ray Gustafson)
   4. Skytec Tubesters (Doug Renwick)
   5. Question on 516-F2...why would there be a 200 RX in	series
      with L2 (kc9cdt@xxxxxxx)
   6. Re: Question on 516-F2...why would there be a 200 RX in
      series with L2 (Peter Doherty)
  7. Re: Question on 516-F2...why would there be a 200 RX in
      series with L2 (Colin Lamb)
   8. Re: Question on 516-F2...why would there be a 200 RX in
    series with L2 (Peter Doherty)
   9. Re: 354B-1 (Robert Thomas)
  10. Re: 354B-1 (Tom Chirhart)

	
Attached Message
	
                    
			
From
			
Joe Eide <jbeide@xxxxxxxxxxx>
                    
                    
			
To
			
'net Collins' <collins@xxxxxxxxxxxxx>
                    
                
			
Subject
			
{Collins} 354B-1
                
                
			
Date
			
Fri, 20 Nov 2015 12:02:04 -0600
		
	

Hello friends,

Does anyone know what this module is?  It consists of a small box with a 
tube socket and a plug-in mechanical filter socket.
It looks like if would accommodate the F500B-* style filter used in the 
51J-4 type receiver.

It is labeled "TYPE 354B-1  522 9047 004".

Any info would be appreciated.

73,

Joe - KB9R


 
	
Attached Message
	
                    
			
From
			
Ray Gustafson <wb0hhm@xxxxxxxxxxx>
                    
                    
			
To
			
collins@xxxxxxxxxxxxx <collins@xxxxxxxxxxxxx>
                    
                
			
Subject
			
{Collins} KWM-2 Frequency jumps 400 HZ
                
                
			
Date
			
Fri, 20 Nov 2015 11:31:14 -0600
		
	


I have a KWM-2 that will jump frequency about 400 HZ without any reason , I have narrow it down to the PTO pretty much
As I have had another radio tuned to the PTO Frequency  to watch and other times a scope / counter hooked to PTO jack in the rear to Monitor .

I did take the PTO out and clean , Lub and replace parts  as per article written up by Jim Miller N4BE That improved the normal drift from cold start but still have to frequency jump at times . 

As of late it doesn’t seem to act up as much , maybe loading the RCA VFO jack in back with 
Scope/counter has changed things some , will try it without that hooked up for awhile now. 

Anyone have this problem ? 

                                                                                    Ray WB0HHM 
  


 
	
Attached Message
	
                    
			
From
			
Ray Gustafson <wb0hhm@xxxxxxxxxxx>
                    
                    
			
To
			
collins@xxxxxxxxxxxxx
                    
                
			
Subject
			
Re: {Collins} KWM-2 Frequency jumps 400 HZ
                
                
			
Date
			
Fri, 20 Nov 2015 18:31:21 -0600
		
	

Hi
Thanks for the all  suggestions , It gives something more to try , the funny 
thing is that it hasn't acted up for a few days , but it did that before , I 
guess it goes in streaks .

                                                 
                                                                             
                                                                             
              Ray

-----Original Message----- 
From: Ray Gustafson
Sent: Friday, November 20, 2015 11:31 AM
To: collins@xxxxxxxxxxxxx
Subject: {Collins} KWM-2 Frequency jumps 400 HZ


I have a KWM-2 that will jump frequency about 400 HZ without any reason , I 
have narrow it down to the PTO pretty much
As I have had another radio tuned to the PTO Frequency  to watch and other 
times a scope / counter hooked to PTO jack in the rear to Monitor .

I did take the PTO out and clean , Lub and replace parts  as per article 
written up by Jim Miller N4BE That improved the normal drift from cold start 
but still have to frequency jump at times .

As of late it doesn’t seem to act up as much , maybe loading the RCA VFO 
jack in back with
Scope/counter has changed things some , will try it without that hooked up 
for awhile now.

Anyone have this problem ?

                                           
        Ray WB0HHM

*** You are subscribed to Collins as wb0hhm@xxxxxxxxxxx. If you wish to 
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Attached Message
	
                    
			
From
			
Doug Renwick <ve5ra@xxxxxxxxxxx>
                    
                    
			
To
			
collins@xxxxxxxxxxxxx
                    
                
			
Subject
			
{Collins} Skytec Tubesters
                
                
			
Date
			
Fri, 20 Nov 2015 18:34:03 -0600
		
	

Along with my friends Collins equipment I found two sets of Tubesters.  One
set for a 75S-3B/C and the other for a 32S-3 both with instructions.
Checking eBay indicates these have sold for $275 USD and above.  What would
be a reasonable price for these today?
Doug/VA5DX

Climate change is natural.  I want climate change.  I want it to be warmer
where I live.



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Attached Message
	
                    
			
From
			
kc9cdt@xxxxxxx
                    
                    
			
To
			
collins@xxxxxxxxxxxxx
                    
                
			
Subject
			
{Collins} Question on 516-F2...why would there be a 200 RX inseries with L2
                
                
			
Date
			
Fri, 20 Nov 2015 21:23:34 -0500
		
	


Hi everyone....
Getting into my spare 516-F2, that I have never used here. Going to replace some CAPS as well as the old broken HV socket with a ceramic one.

In the process of replacing the HV tube socket and looking around.....I find a 200 ohm 10 watt RX in series with the LV choke L2. It is between tube V2 pin 2 and the L2 8H choke. 
 
Why would you think someone would put it there??
Thanks very much.
73,
Lee
 

260-403-6936 Cell


 
	
Attached Message
	
                    
			
From
			
Peter Doherty <w1uo.cqdx@xxxxxxxxx>
                    
                    
			
Cc
			
Collins Reflector <collins@xxxxxxxxxxxxx>
                    
                
			
Subject
			
Re: {Collins} Question on 516-F2...why would there be a 200 RX inseries with L2
                
                
			
Date
			
Fri, 20 Nov 2015 19:17:25 -0800
		
	

If the power supply is using solid state replacements for the 5U4/5R4, this
resistor is added to reduce the +275V back to a more normal level.

On Fri, Nov 20, 2015 at 6:23 PM, kc9cdt--- via Collins <
collins@xxxxxxxxxxxxx> wrote:

>
> Hi everyone....
> Getting into my spare 516-F2, that I have never used here. Going to
> replace some CAPS as well as the old broken HV socket with a ceramic one.
>
> In the process of replacing the HV tube socket and looking around.....I
> find a 200 ohm 10 watt RX in series with the LV choke L2. It is between
> tube V2 pin 2 and the L2 8H choke.
>
> Why would you think someone would put it there??
> Thanks very much.
> 73,
> Lee
>
>
> 260-403-6936 Cell
> *** You are subscribed to Collins as w1uo.cqdx@xxxxxxxxx. If you wish to
> unsubscribe, or modify your preferences please visit
> http://mailman.listserve.com/listmanager/listinfo/collins ***
>


 
	
Attached Message
	
                    
			
From
			
Colin Lamb <k7fm@xxxxxxxxxxxx>
                    
                    
			
To
			
collins@xxxxxxxxxxxxx
                    
                
			
Subject
			
Re: {Collins} Question on 516-F2...why would there be a 200 RX inseries with L2
                
                
			
Date
			
Fri, 20 Nov 2015 19:51:44 -0800
		
	

Hi Lee:

I saw a reply that it might be because solid state rectifiers were 
used.  However, I am guessing that 150 ma is being drawn which means 
that 30 volts would drop across the resistor.  Even with vacuum tubes, 
the low voltage supply is "hot".  Measure the voltage at the KWM-2 under 
receive and see how the voltage compares to spec.

Adjust accordingly.

73,  Colin  K7FM

On 11/20/2015 6:23 PM, kc9cdt--- via Collins wrote:
> Hi everyone....
> Getting into my spare 516-F2, that I have never used here. Going to replace some CAPS as well as the old broken HV socket with a ceramic one.
>
> In the process of replacing the HV tube socket and looking around.....I find a 200 ohm 10 watt RX in series with the LV choke L2. It is between tube V2 pin 2 and the L2 8H choke.
>   
> Why would you think someone would put it there??
> Thanks very much.
> 73,
> Lee
>   
>
> 260-403-6936 Cell
> *** You are subscribed to Collins as k7fm@xxxxxxxxxxxx. If you wish to unsubscribe, or modify your preferences please visit http://mailman.listserve.com/listmanager/listinfo/collins ***
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2016.0.7227 / Virus Database: 4460/11037 - Release Date: 11/20/15
>
>



 
	
Attached Message
	
                    
			
From
			
Peter Doherty <w1uo.cqdx@xxxxxxxxx>
                    
                    
			
To
			
Collins Reflector <collins@xxxxxxxxxxxxx>
                    
                
			
Subject
			
Re: {Collins} Question on 516-F2...why would there be a 200 RX inseries with L2
                
                
			
Date
			
Fri, 20 Nov 2015 20:58:42 -0800
		
	

I happened to make the measurement this week while I was doing my annual
equipment rehab on the KWM2-A.  On RX, the voltage was 300V, on TX, 270V.
Spec is 300V@170mA and 285V@210mA. I didn't measure the current.  My supply
was solid stated in the past and came with the 200 ohm resistor installed.
My line voltage is low ~116V.

On Fri, Nov 20, 2015 at 7:51 PM, Colin Lamb <k7fm@xxxxxxxxxxxx> wrote:

> Hi Lee:
>
> I saw a reply that it might be because solid state rectifiers were used.
> However, I am guessing that 150 ma is being drawn which means that 30 volts
> would drop across the resistor.  Even with vacuum tubes, the low voltage
> supply is "hot".  Measure the voltage at the KWM-2 under receive and see
> how the voltage compares to spec.
>
> Adjust accordingly.
>
> 73,  Colin  K7FM
>
> On 11/20/2015 6:23 PM, kc9cdt--- via Collins wrote:
>
>> Hi everyone....
>> Getting into my spare 516-F2, that I have never used here. Going to
>> replace some CAPS as well as the old broken HV socket with a ceramic one.
>>
>> In the process of replacing the HV tube socket and looking around.....I
>> find a 200 ohm 10 watt RX in series with the LV choke L2. It is between
>> tube V2 pin 2 and the L2 8H choke.
>>   Why would you think someone would put it there??
>> Thanks very much.
>> 73,
>> Lee
>>
>> 260-403-6936 Cell
>> *** You are subscribed to Collins as k7fm@xxxxxxxxxxxx. If you wish to
>> unsubscribe, or modify your preferences please visit
>> http://mailman.listserve.com/listmanager/listinfo/collins ***
>>
>>
>> -----
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 2016.0.7227 / Virus Database: 4460/11037 - Release Date: 11/20/15
>>
>>
>>
> *** You are subscribed to Collins as w1uo.cqdx@xxxxxxxxx. If you wish to
> unsubscribe, or modify your preferences please visit
> http://mailman.listserve.com/listmanager/listinfo/collins ***
>


 
	
Attached Message
	
                    
			
From
			
Robert Thomas <ve3tou@xxxxxxxxxxxxxxxxxxx>
                    
                    
			
To
			
Joe Eide <jbeide@xxxxxxxxxxx>; 'net Collins' <collins@xxxxxxxxxxxxx>
                    
                
			
Subject
			
Re: {Collins} 354B-1
                
                
			
Date
			
Sat, 21 Nov 2015 07:22:11 -0500
		
	

The 354A-1 is a filter kit that effectively converts a 51j-3 to a j-4. 
I'd guess the 354B-1 is simply a different version of this. The manual 
for the 354A-1 is on the CCA website, so would be worth a look for 
comparison.

73
Bob

On 2015-11-20 1:02 PM, Joe Eide wrote:
> Hello friends,
>
> Does anyone know what this module is?  It consists of a small box with a
> tube socket and a plug-in mechanical filter socket.
> It looks like if would accommodate the F500B-* style filter used in the
> 51J-4 type receiver.
>
> It is labeled "TYPE 354B-1  522 9047 004".
>
> Any info would be appreciated.
>
> 73,
>
> Joe - KB9R
> *** You are subscribed to Collins as ve3tou@xxxxxxxxxxxxxxxxxxx. If you
> wish to unsubscribe, or modify your preferences please visit
> http://mailman.listserve.com/listmanager/listinfo/collins ***
>
>


 
	
Attached Message
	
                    
			
From
			
Tom Chirhart <k4ncgva@xxxxxxxxx>
                    
                    
			
To
			
ve3tou@xxxxxxxxxxxxxxxxxxx
                    
                    
			
Cc
			
net Collins <collins@xxxxxxxxxxxxx>
                    
                
			
Subject
			
Re: {Collins} 354B-1
                
                
			
Date
			
Sat, 21 Nov 2015 07:36:33 -0500
		
	

Bob/Joe
It's a mechanical filter conversion kit like Bob stated. Vintage manuals has the instruction book for it for $6. 
73
Tom K4NCG
Sent from my iPad

> On Nov 21, 2015, at 7:22 AM, Robert Thomas <ve3tou@xxxxxxxxxxxxxxxxxxx> wrote:
> 
> The 354A-1 is a filter kit that effectively converts a 51j-3 to a j-4. I'd guess the 354B-1 is simply a different version of this. The manual for the 354A-1 is on the CCA website, so would be worth a look for comparison.
> 
> 73
> Bob
> 
>> On 2015-11-20 1:02 PM, Joe Eide wrote:
>> Hello friends,
>> 
>> Does anyone know what this module is?  It consists of a small box with a
>> tube socket and a plug-in mechanical filter socket.
>> It looks like if would accommodate the F500B-* style filter used in the
>> 51J-4 type receiver.
>> 
>> It is labeled "TYPE 354B-1  522 9047 004".
>> 
>> Any info would be appreciated.
>> 
>> 73,
>> 
>> Joe - KB9R
>> *** You are subscribed to Collins as ve3tou@xxxxxxxxxxxxxxxxxxx. If you
>> wish to unsubscribe, or modify your preferences please visit
>> http://mailman.listserve.com/listmanager/listinfo/collins ***
> *** You are subscribed to Collins as k4ncgva@xxxxxxxxx. If you wish to unsubscribe, or modify your preferences please visit http://mailman.listserve.com/listmanager/listinfo/collins ***


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