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Re: Hallicrafters and National Matsushita Generator manuals

 

Yes, Thank you for the suggestions Tom, and Peter too!
I have been trying all three names, and different combinations of them too, for some time now. The only documentation I can find is on the digital models, that seem much newer. I was hopping that someone in the group might have actually had the documentation.
Thanks again for the help,
-Drew
KN6WFM
73?

?

On Tuesday, May 21, 2024 at 06:26:05 AM PDT, Tom Dailey <radio@...> wrote:


... and Matsushita sold products under their "home" name NATIONAL...
Early video gear that I worked on often arrived with Matsushita,
National, OR Panasonic name badges.... check all 3.

Tom - W?EAJ

Hallicrafters and National Matsushita Generator manuals

 

... and Matsushita sold products under their "home" name NATIONAL...
Early video gear that I worked on often arrived with Matsushita,
National, OR Panasonic name badges.... check all 3.

Tom - W?EAJ
Re: SR2000 CW Offset

 

I? contacted Bomar about crystals for my SX-117 and they wanted complete specs for the crystal, which of course I didn't have.? I offered to send them the schematic so they could maybe determine what they needed, but they couldn't do that.? It appears that no one is making crystals in HC-6 holders these days, but I ended up buying one in an HC-49 holder (smaller than HC-6 and with leads instead of pins).? The supplier was Krystaly in the Czech Republic.? You can contact them at: krystaly@... .? It took around 5 weeks for delivery and the price was $40 (includes $18 customs fee and $9 shipping).? You can use these crystals by taking one of the HC-6 holders apart and soldering the new crystal leads to the old pins.? I had previously done that with a 16 MHz crystal to get 10 MHz WWV on the receiver.? Krystaly's communications is excellent.??

73, Floyd - K8AC
Re: SR2000 CW Offset

 
Edited

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Thank you so much Jim!? Fingers crossed!

On May 20, 2024 6:21 PM, "James Liles via groups.io" <hallicrafterssr2000@...> wrote:
Good evening,

I somehow lost the last post while editing it; it's in your quoted text and replaced here.

"Late to the post.? If the shift is only 50Hz, something is amiss.? Should be as in photo.

The offset is used in tune mode also.? ?Inadequate drive could result in underloading the finals and excessive screen current.? Check for exposure by loading the radio up then whistling the radio up in sideband while checking the ALC level and screen current.? If the screen exceeds specs, you will need to revisit the drive levels and offset.

I ceased SR-2000 restoration several years ago and still have a substantial inventory of spare parts and a few SR-2000's that were in the Q for restoration when I retired.? I will check for the carrier crystals tomorrow and get back. ?

Good luck and regards Jim K9AXN"?

Re: SR2000 CW Offset

 
Edited

Good evening,

I somehow lost the last post while editing it; it's in your quoted text and replaced here.

"Late to the post.? If the shift is only 50Hz, something is amiss.? Should be as in photo.

The offset is used in tune mode also.? ?Inadequate drive could result in underloading the finals and excessive screen current.? Check for exposure by loading the radio up then whistling the radio up in sideband while checking the ALC level and screen current.? If the screen exceeds specs, you will need to revisit the drive levels and offset.

I ceased SR-2000 restoration several years ago and still have a substantial inventory of spare parts and a few SR-2000's that were in the Q for restoration when I retired.? I will check for the carrier crystals tomorrow and get back. ?

Good luck and regards Jim K9AXN"?
Re: Hallicrafters and National Matsushita Generator manuals

 

?
Hallicrafters S-200?4 tubes and?5 bands.
Hallicrafters S-210? 6 tubes and 6 bands
?
You can draw your own conclusions about "similar"!
?
Although they both come in a simulated type wood?case style, rectangular style dial, and they both come with 4 knobs.
?
Get the correct manual aand schematic.
?
National (Matsushita) labeled AM Signal Generator VP-8271A, I believe, was not sold in the U.S. Some of the "VP" labeled stuff from them was sold under the Panasonic name here in the U.S.?Don't know if the VP-8271A was one of them. Try searching just under the Panasonic name.
?
Pete, wa2cwa
?
?
On Mon, 20 May 2024 19:20:17 +0000 (UTC) "KN6WFM (Drew)" <agriffith@...> writes:

Greeting fellow Hallicrafters Enthusiasts,
I'm looking for two manuals:

1. The Hallicrafters S-200 or S-210 manual, or specifically the S-210 Schematic. I have a working S-210, that I re-capped, but it needs an alignment. I was told by someone at HI-FI Audio that they use the S-200 schematic in place of the S-210, so their S-210 kit does not contain an actual S-210 schematic.
Are these two radios that similar, and if so does anyone have the S-200 schematic/manual???

2. Any chance anyone here have a manual for the National (Matsushita) AM Signal Generator VP-8271A? I believe this generator was from the early 1980, possibly the late 70s. I came across this at a swap-meet and paid $20 for it, and it works. Unfortunately, the output sign-wave is slightly distorted, so it needs a little TLC.
On the Bama site there is a VP-8181A listed, but that's a digital generator, the VP_8271A is an Analog 100 to 30 mHz.
Thank you in advance,
-Drew
KN6WFM
Re: Hallicrafters and National Matsushita Generator manuals

 

Score!
Thank you Walt!

On Monday, May 20, 2024 at 01:35:48 PM PDT, waltcates <cateswa@...> wrote:


Manualman.com has the S210 manual for $13.25.


Walt Cates, WD0GOF
?
A majority of acceptance is not proof of correctness.




















				
					
					

					




From: [email protected] <[email protected]> on behalf of KN6WFM (Drew) <agriffith@...>

Sent: Monday, May 20, 2024 2:20 PM

To: HALLI IO GROUP <[email protected]>

Subject: [HallicraftersRadios] Hallicrafters and National Matsushita Generator manuals

?








Greeting fellow Hallicrafters Enthusiasts,


I'm looking for two manuals:







1. The Hallicrafters S-200 or S-210 manual, or specifically the S-210 Schematic. I have a working S-210, that I re-capped, but it needs an alignment. I was told by someone at HI-FI Audio that they use the S-200 schematic in
 place of the S-210, so their S-210 kit does not contain an actual S-210 schematic.


Are these two radios that similar, and if so does anyone have the S-200 schematic/manual???







2. Any chance anyone here have a manual for the National (Matsushita) AM Signal Generator VP-8271A? I believe this generator was from the early 1980, possibly the late 70s. I came across this at a swap-meet and paid $20 for
 it, and it works. Unfortunately, the output sign-wave is slightly distorted, so it needs a little TLC.


On the Bama site there is a VP-8181A listed, but that's a digital generator, the VP_8271A is an Analog 100 to 30 mHz.


Thank you in advance,


-Drew


KN6WFM











            
        

					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Hallicrafters and National Matsushita Generator manuals
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
?





Hallicrafters S-200?4 tubes and?5 bands.


Hallicrafters S-210? 6 tubes and 6 bands


?


You can draw your own conclusions about "similar"!


?


Although they both come in a simulated type wood?case style, 
rectangular style dial, and they both come with 4 knobs.


?


Get the correct manual aand schematic.


?


National (Matsushita) labeled AM Signal Generator VP-8271A, I believe, was 
not sold in the U.S. Some of the "VP" labeled stuff from them was sold under the 
Panasonic name here in the U.S.?Don't know if the VP-8271A was one of them. 
Try searching just under the Panasonic name.


?


Pete, wa2cwa


ps i have both hallicrafters listed on my web site if you want something 
completely readable




?


?


On Mon, 20 May 2024 19:20:17 +0000 (UTC) "KN6WFM (Drew)" <agriffith@...> writes:



				
					
					

					



  

  
Greeting fellow Hallicrafters 
  Enthusiasts,

  
I'm looking for two manuals:

  


  
1. The Hallicrafters S-200 or S-210 manual, 
  or specifically the S-210 Schematic. I have a working S-210, that I re-capped, 
  but it needs an alignment. I was told by someone at HI-FI Audio that they use 
  the S-200 schematic in place of the S-210, so their S-210 kit does not contain 
  an actual S-210 schematic.

  
Are these two radios that similar, and if so 
  does anyone have the S-200 schematic/manual???

  


  
2. Any chance anyone here have a manual for 
  the National (Matsushita) AM Signal Generator VP-8271A? I believe this 
  generator was from the early 1980, possibly the late 70s. I came across this 
  at a swap-meet and paid $20 for it, and it works. Unfortunately, the output 
  sign-wave is slightly distorted, so it needs a little TLC.

  
On the Bama site there is a VP-8181A listed, 
  but that's a digital generator, the VP_8271A is an Analog 100 to 30 mHz.

  
Thank you in advance,

  
-Drew

  
KN6WFM

					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Hallicrafters and National Matsushita Generator manuals
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				

        
Thanks Walt,
I kind-a knew they were not similar, especially sine the S-210 has the FM band.
-Drew



        
        

            

                
                

                        On Monday, May 20, 2024 at 12:51:46 PM PDT, waltcates <cateswa@...> wrote:
                    

                    


                    


                
                
                



The s-200 and the s-210 are not similar. The S-200 is a 4 tube single conversion receiver. The S210 is a 6 tube dual conversion receiver.



















Walt Cates, WD0GOF



?


A majority of acceptance is not proof of correctness.




















				
					
					

					




From: [email protected] <[email protected]> on behalf of KN6WFM (Drew) <agriffith@...>

Sent: Monday, May 20, 2024 2:20 PM

To: HALLI IO GROUP <[email protected]>

Subject: [HallicraftersRadios] Hallicrafters and National Matsushita Generator manuals

?








Greeting fellow Hallicrafters Enthusiasts,


I'm looking for two manuals:







1. The Hallicrafters S-200 or S-210 manual, or specifically the S-210 Schematic. I have a working S-210, that I re-capped, but it needs an alignment. I was told by someone at HI-FI Audio that they use the S-200 schematic in
 place of the S-210, so their S-210 kit does not contain an actual S-210 schematic.


Are these two radios that similar, and if so does anyone have the S-200 schematic/manual???







2. Any chance anyone here have a manual for the National (Matsushita) AM Signal Generator VP-8271A? I believe this generator was from the early 1980, possibly the late 70s. I came across this at a swap-meet and paid $20 for
 it, and it works. Unfortunately, the output sign-wave is slightly distorted, so it needs a little TLC.


On the Bama site there is a VP-8181A listed, but that's a digital generator, the VP_8271A is an Analog 100 to 30 mHz.


Thank you in advance,


-Drew


KN6WFM











            
        

					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Hallicrafters and National Matsushita Generator manuals
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				








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Manualman.com has the S210 manual for $13.25.



















Walt Cates, WD0GOF



?


A majority of acceptance is not proof of correctness.




















				
					
					

					




From: [email protected] <[email protected]> on behalf of KN6WFM (Drew) <agriffith@...>

Sent: Monday, May 20, 2024 2:20 PM

To: HALLI IO GROUP <[email protected]>

Subject: [HallicraftersRadios] Hallicrafters and National Matsushita Generator manuals

?








Greeting fellow Hallicrafters Enthusiasts,


I'm looking for two manuals:







1. The Hallicrafters S-200 or S-210 manual, or specifically the S-210 Schematic. I have a working S-210, that I re-capped, but it needs an alignment. I was told by someone at HI-FI Audio that they use the S-200 schematic in
 place of the S-210, so their S-210 kit does not contain an actual S-210 schematic.


Are these two radios that similar, and if so does anyone have the S-200 schematic/manual???







2. Any chance anyone here have a manual for the National (Matsushita) AM Signal Generator VP-8271A? I believe this generator was from the early 1980, possibly the late 70s. I came across this at a swap-meet and paid $20 for
 it, and it works. Unfortunately, the output sign-wave is slightly distorted, so it needs a little TLC.


On the Bama site there is a VP-8181A listed, but that's a digital generator, the VP_8271A is an Analog 100 to 30 mHz.


Thank you in advance,


-Drew


KN6WFM









					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Hallicrafters and National Matsushita Generator manuals
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				








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The s-200 and the s-210 are not similar. The S-200 is a 4 tube single conversion receiver. The S210 is a 6 tube dual conversion receiver.



















Walt Cates, WD0GOF



?


A majority of acceptance is not proof of correctness.




















				
					
					

					




From: [email protected] <[email protected]> on behalf of KN6WFM (Drew) <agriffith@...>

Sent: Monday, May 20, 2024 2:20 PM

To: HALLI IO GROUP <[email protected]>

Subject: [HallicraftersRadios] Hallicrafters and National Matsushita Generator manuals

?








Greeting fellow Hallicrafters Enthusiasts,


I'm looking for two manuals:







1. The Hallicrafters S-200 or S-210 manual, or specifically the S-210 Schematic. I have a working S-210, that I re-capped, but it needs an alignment. I was told by someone at HI-FI Audio that they use the S-200 schematic in
 place of the S-210, so their S-210 kit does not contain an actual S-210 schematic.


Are these two radios that similar, and if so does anyone have the S-200 schematic/manual???







2. Any chance anyone here have a manual for the National (Matsushita) AM Signal Generator VP-8271A? I believe this generator was from the early 1980, possibly the late 70s. I came across this at a swap-meet and paid $20 for
 it, and it works. Unfortunately, the output sign-wave is slightly distorted, so it needs a little TLC.


On the Bama site there is a VP-8181A listed, but that's a digital generator, the VP_8271A is an Analog 100 to 30 mHz.


Thank you in advance,


-Drew


KN6WFM









					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Hallicrafters and National Matsushita Generator manuals
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Greeting fellow Hallicrafters Enthusiasts,
I'm looking for two manuals:

1. The Hallicrafters S-200 or S-210 manual, or specifically the S-210 Schematic. I have a working S-210, that I re-capped, but it needs an alignment. I was told by someone at HI-FI Audio that they use the S-200 schematic in place of the S-210, so their S-210 kit does not contain an actual S-210 schematic.
Are these two radios that similar, and if so does anyone have the S-200 schematic/manual???

2. Any chance anyone here have a manual for the National (Matsushita) AM Signal Generator VP-8271A? I believe this generator was from the early 1980, possibly the late 70s. I came across this at a swap-meet and paid $20 for it, and it works. Unfortunately, the output sign-wave is slightly distorted, so it needs a little TLC.
On the Bama site there is a VP-8181A listed, but that's a digital generator, the VP_8271A is an Analog 100 to 30 mHz.
Thank you in advance,
-Drew
KN6WFM

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: SR2000 CW Offset
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
							

Edited
							
								


							
						
					

				

			

			

			

				








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Out of business

C







On May 20, 2024 10:29 AM, "waltcates via groups.io" <cateswa@...> wrote:









have you tried these:





























Walt Cates, WD0GOF



?


A majority of acceptance is not proof of correctness.




















				
					
					

					




From: [email protected] <[email protected]> on behalf of W7WRX <clark@...>

Sent: Sunday, May 19, 2024 5:24 PM

To: [email protected] <[email protected]>

Subject: Re: [HallicraftersRadios] SR2000 CW Offset

?






Got it. Thank You






C








					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: SR2000 CW Offset
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
							

Edited
							
								


							
						
					

				

			

			

			

				








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have you tried these:





























Walt Cates, WD0GOF



?


A majority of acceptance is not proof of correctness.




















				
					
					

					




From: [email protected] <[email protected]> on behalf of W7WRX <clark@...>

Sent: Sunday, May 19, 2024 5:24 PM

To: [email protected] <[email protected]>

Subject: Re: [HallicraftersRadios] SR2000 CW Offset

?






Got it. Thank You






C







					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: SR2000 CW Offset
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
							

Edited
							
								


							
						
					

				

			

			

			

				








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Hi Jim.









The manual states 50HZ shift.? I understand you can change the 33pf cap and move it around to your liking. I just was curious as to why this was even happening.









My Second SR2000 has no Carrier osc crystals. I have searched the world over trying to find them.? Nobody makes crystals anymore. Anyone that has a parts rig, wont give them up.









As a result, I have no choice but to put a small Clock generator/oscillator under the deck hidden away.? ?









This is challenging as the radio actually needs THREE channels due to the CW offset.? ?I ran the rig with the two channels programmed on the Clock generator and it seemed to work on all modes.? Side band worked fantastically.??









There is an advantage, You can set the frequency to whatever you want.? This allows you to nail down the pass band perfectly to the aging Lattice filter.? ?My lattice filter has shifted 100 over.? ?So, I can easily program that offset to both sidebands and
 bingo, Audio is full, smooth and clear.









I understand why this offset is employed now.? I will do further testing to see if drive is less without the offset.? I have a set of Xtals out of the first rig to swap in.? Then I will disable the offset and attempt to Tune or use CW and see the effect.









If I do need the offset, I will then have to build a third OSC assembly.? Otherwise, CW won't work.? The units I have do not allow you to edit the firmware. Otherwise, I could set an offset with a trigger.









Just trying to save the radio.? In 2024 we have little options for parts now.





C



























				
					
					

					




From: [email protected] <[email protected]> on behalf of James Liles via groups.io <hallicrafterssr2000@...>

Sent: Monday, May 20, 2024 8:15 AM

To: [email protected] <[email protected]>

Subject: Re: [HallicraftersRadios] SR2000 CW Offset

?






[Edited Message Follows]

Late to the post.? If the shift is only 50Hz, something is amiss.? Should be as in photo.



The offset is used in tune mode also.? ?This could result in underloading the finals and excessive screen current.? Check for exposure by loading the radio up then whistling the radio up while checking ALC level and screen current.



Good luck and regards Jim K9AXN? ?



 ??



Regards Jim K9AXN






					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ht-37 Power Transformer
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				

  
  




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Paul,

    
I would also be interested in 1-2 TX for the HT32s I have here.?
      I've already had one TX fail.? 

    

    
73/jeff/ac0c
alpha-charlie-zero-charlie


    
On 5/19/2024 3:23 PM, Paul Christensen
      wrote:

    

    

				
					
					

					



      
      
Thanks, Walt. Mine is a “673” transformer so I’m guessing it
        pre-dates the factory change to the upgraded transformer.?

        

        Capacitor and crystal date codes are from 12/1962 to mid-1963.
        ?This HT-37 has all Hallicrafters branded tubes.

      
Paul, W9AC.?

      
    

  


					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: SR2000 CW Offset
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Got it. Thank You



C

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: Ht-37 Power Transformer
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				
Thanks, Walt. Mine is a “673” transformer so I’m guessing it pre-dates the factory change to the upgraded transformer.?

Capacitor and crystal date codes are from 12/1962 to mid-1963. ?This HT-37 has all Hallicrafters branded tubes.


Paul, W9AC.?

				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: SR2000 CW Offset
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				








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If you don't work CW, it won't make any difference. If you do, it would give you more power output in CW.



















Walt Cates, WD0GOF



?


A majority of acceptance is not proof of correctness.


























				
					
					

					




From:[email protected] <[email protected]> on behalf of W7WRX <clark@...>

Sent:?Sunday, May 19, 2024 2:41 PM

To:[email protected] <[email protected]>

Subject:?Re: [HallicraftersRadios] SR2000 CW Offset

?




Thanks Walt.? I was on the right path.? My radio seems to work fine without the offset.? I was curious as to why it was even there.?







C







On May 19, 2024 12:05 PM, "waltcates via groups.io" <cateswa@...> wrote:



In the CW mode the balanced mixer is biased to pass the carrier oscillator signal (USB) without carrier suppression. The USB osc frequency is just outside the pass band of the xtal filter. Although the signal is much larger than the normal suppressed carrier
 signal it is still way down the slope of the filter. The 50Hz offset insures there is enough signal for CW operation.



















Walt Cates, WD0GOF



?


A majority of acceptance is not proof of correctness.





















From:[email protected] <[email protected]> on behalf of W7WRX <clark@...>

Sent:?Sunday, May 19, 2024 12:39 PM

To:[email protected] <[email protected]>

Subject:?[HallicraftersRadios] SR2000 CW Offset

?




What is the purpose of the 50HZ CW offset?? This is accomplished by C135 a 33PF cap.? Why would you want to kick CW carrier over just 50 hz???



I can run the rig on CW with out the offset and it seems to work. Is it just getting it closer to one side of the lattice filter?






C





					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
			
				
	
		
	

		
			

			
			

			
			
				
				

					

						
							
							

							Re: A couple of miscellaneous questions
							
						
					

				

				

			
			

				

					


						
							

								
								
							

						
					

					

						
							


						
						 
						
							
							
						
						
					

				

			

			

			

				

  
  




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    Tom

    

    

    Thanks for the suggestions...I will be taking apart the case
    sometime in the next few days and

    keep you posted

    

    I had the foresight to remove the batteries in both units when I put
    them away, so no 'crud' 

    to contend with 

    

    Thanks, nice to know us Navy guys stick together

    

    Tom Latimer (CT(R)2)

    

    

    

    
On 5/19/2024 15:41, Tom Dailey wrote:

    

    

				
					
					

					



      
      Another frequent problem (at least out here in DRY Colorado, is 

      "zorching" of the front-end FET.? Static WILL take it right out,
      as 

      there's no protection in front of it.? The NTE sub works quite
      well, 

      should that ever be the case.? Yes, the battery compartmentj (2 

      sections) definately gets crudded up if ignored... a Harbor Fright
      [sic] 

      brass brush works great on the spring contacts.? and yep.... Jim's
      

      right... the (closed circuit) earphone jack can get slight
      oxidized.? 

      Sangean designed and built the radio, but all of mine were the
      RatShack 

      "Realistic" DX-440, and for their size, they're qujte amazing.

      

      Tom - W?EAJ
      
    

    

  


					


				
				
				
			

			
			

	

	
			

			

				
					

				
				
			

			

				

					

				

			

			
			
			

			


				
	



		
			
		
	

	
	
	
	


	

		
		
		
		
		
	

	

		
		
		
		
		
	

	
	

		
		
		
		
	



	

		

			
	
		

			
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