Re: All bent out of shape (3-500z) - now shock sensor value question
Of course I know that it is a triode. No shorts were measured. But this tube makes noises that a good tube does not make. I would not trust it as far as I could throw the amp it was in. 73 -Jim NU0C On Wed, 14 Feb 2024 06:15:13 -0600 "David" <david.w5xu@...> wrote: Remember this is a triode. There is roughly a 1/2 inch separation between
the inside face of the plate cylinder and the grid. There is a tiny
distance between the grid and the filament and that is where most of the
shorts develope.
So if the grid/ filament is shorted (you can measure this with an
ohmmeter) the tube is likely not salvageable. These are the ones you make
lamps out of.
Bumping the plate structure does little movement to the grid. You would
think that with a +- $300 each you would get a better deal. Too bad as
when they are good and in service barring abuse they last a good while.
David Assaf III
W5XU VP8RXU
On Tue, Feb 13, 2024, 11:52 PM Jim Shorney <jimNU0C@...> wrote:
Not even going to try with the one I found. While I don't see anything
rolling around inside the envelope, I do definitely hear mechanical noises
from inside the plate structure when the tube is rotated or gently shaken.
I would not trust it even if I could get the plate straight.
73
-Jim
NU0C
On Tue, 13 Feb 2024 22:13:54 -0600 (CST)
"Gary Follett" <xntrick1948@...> wrote:
The Eimac 3-500Z is one of the most fragile tubes in existence in terms of the plate support structure. However, you CAN repair a bent 3-500Z by
banging it against a firm, but not hard surface just hard enough to swing
the plate back into the desired neutral centered position. I have done this
dozens of times with great results. Best to do the tapping below the
centerline of the plate relative to the base.
Gary
W0DVN
On 02/13/2024 10:31 AM CST Joe - W7RKN <w7rkn.7@...> wrote:
Sorry Jim¡.The courts have ruled otherwise. You are buying a specific
amount of ¡®bulk¡¯ insurance, say $500.00¡that is what you are entitled to if
there is a loss. If the item shipped was valued at, say, $354.95 and you
bought insurance for $354.95, then *that* is what you would receive in a
loss.
Joe - W7RKN
From: [email protected] [mailto:[email protected]] On Behalf
Of Jim VE7RF
Sent: Tuesday, February 13, 2024 2:13 AM
To: [email protected]
Subject: Re: [DRAKE-RADIO] All bent out of shape (3-500z) - now shock
sensor value question
On Tue, Feb 13, 2024 at 01:57 AM, Joe - W7RKN wrote:
<When we purchase shipping insurance through whomever, they will
always tell you to submit an invoice for the product loss. I tell them,
nuts to you¡I paid for 500 dollars of insurance, cut me a check for 500
dollars. I took UPS to court on <this a number of years ago and won. Just
an FYI!
## You can't insure it for more than it's worth.
--
73
-Jim
NU0C
-- 73 -Jim NU0C
|
Re: All bent out of shape (3-500z) - now shock sensor value question
Remember this is a triode.? There is roughly a 1/2 inch separation between the inside face of the plate cylinder and the grid.? There is a tiny distance between the grid and the filament and that is where most of the shorts develope. So if the grid/ filament is shorted (you can measure this with an ohmmeter)? the tube is likely not salvageable.? These are the ones you make lamps out of. ?? Bumping the plate structure does little movement to the grid.? You would think that with a +- $300 each you would get a better deal.? Too bad as when they are good and in service barring abuse they last a good while.
David Assaf III
W5XU??? VP8RXU
On Tue, Feb 13, 2024, 11:52 PM Jim Shorney < jimNU0C@...> wrote:
Not even going to try with the one I found. While I don't see anything rolling around inside the envelope, I do definitely hear mechanical noises from inside the plate structure when the tube is rotated or gently shaken. I would not trust it even if I could get the plate straight.
73
-Jim
NU0C
On Tue, 13 Feb 2024 22:13:54 -0600 (CST)
"Gary Follett" <xntrick1948@...> wrote:
> The Eimac 3-500Z is one of the most fragile tubes in existence in terms of the plate support structure. However, you CAN repair a bent 3-500Z by banging it against a firm,? but not hard surface just hard enough to swing the plate back into the desired neutral centered position. I have done this dozens of times with great results. Best to do the tapping below the centerline of the plate relative to the base.
>?
> Gary
>?
> W0DVN
>
> > On 02/13/2024 10:31 AM CST Joe - W7RKN <w7rkn.7@...> wrote:
> >?
> >?
> >
> > Sorry Jim¡.The courts have ruled otherwise.? You are buying a specific amount of ¡®bulk¡¯ insurance, say $500.00¡that is what you are entitled to if there is a loss.? If the item shipped was valued at, say, $354.95 and you bought insurance for $354.95, then *that* is what you would receive in a loss.
> >
> >?
> >
> > Joe - W7RKN
> >
> >?
> >
> > From: [email protected] [mailto:[email protected]] On Behalf Of Jim VE7RF
> > Sent: Tuesday, February 13, 2024 2:13 AM
> > To: [email protected]
> > Subject: Re: [DRAKE-RADIO] All bent out of shape (3-500z) - now shock sensor value question
> >
> >?
> >
> > On Tue, Feb 13, 2024 at 01:57 AM, Joe - W7RKN wrote:
> >
> > <When we purchase shipping insurance through whomever, they will always tell you to submit an invoice for the product loss.? I tell them, nuts to you¡I paid for 500 dollars of insurance, cut me a check for 500 dollars.? I took UPS to court on <this a number of years ago and won.? Just an FYI!
> >
> > ##? You can't insure it for more than it's worth.
> >
> >?
> >
> >
> >? ?
>
>
>
>
>
--
73
-Jim
NU0C
|
Drake PS7 Filtercap. Spec.
Hello
?
I am interested in a data sheet for the 2 pcs. 15000 MFD electrolytic capacitors in the PS7 power supply.
Mallory Type CGR.
318-0356
235-8118G.
Is someone able to help ?
?
Thanks in advance.
?
Br.
Bent
OZ5ZD
|
Re: All bent out of shape (3-500z) - now shock sensor value question
Not even going to try with the one I found. While I don't see anything rolling around inside the envelope, I do definitely hear mechanical noises from inside the plate structure when the tube is rotated or gently shaken. I would not trust it even if I could get the plate straight. 73 -Jim NU0C On Tue, 13 Feb 2024 22:13:54 -0600 (CST) "Gary Follett" <xntrick1948@...> wrote: The Eimac 3-500Z is one of the most fragile tubes in existence in terms of the plate support structure. However, you CAN repair a bent 3-500Z by banging it against a firm, but not hard surface just hard enough to swing the plate back into the desired neutral centered position. I have done this dozens of times with great results. Best to do the tapping below the centerline of the plate relative to the base.
Gary
W0DVN
On 02/13/2024 10:31 AM CST Joe - W7RKN <w7rkn.7@...> wrote:
Sorry Jim¡.The courts have ruled otherwise. You are buying a specific amount of ¡®bulk¡¯ insurance, say $500.00¡that is what you are entitled to if there is a loss. If the item shipped was valued at, say, $354.95 and you bought insurance for $354.95, then *that* is what you would receive in a loss.
Joe - W7RKN
From: [email protected] [mailto:[email protected]] On Behalf Of Jim VE7RF
Sent: Tuesday, February 13, 2024 2:13 AM
To: [email protected]
Subject: Re: [DRAKE-RADIO] All bent out of shape (3-500z) - now shock sensor value question
On Tue, Feb 13, 2024 at 01:57 AM, Joe - W7RKN wrote:
<When we purchase shipping insurance through whomever, they will always tell you to submit an invoice for the product loss. I tell them, nuts to you¡I paid for 500 dollars of insurance, cut me a check for 500 dollars. I took UPS to court on <this a number of years ago and won. Just an FYI!
## You can't insure it for more than it's worth.
-- 73 -Jim NU0C
|
Re: All bent out of shape (3-500z) - now shock sensor value question
The Eimac 3-500Z is one of the most fragile tubes in existence in terms of the plate support structure. However, you CAN repair a bent 3-500Z by banging it against a firm, ?but not hard surface just hard enough to swing the plate back into the desired neutral centered position. I have done this dozens of times with great results. Best to do the tapping below the centerline of the plate relative to the base.
?
Gary
?
W0DVN
On 02/13/2024 10:31 AM CST Joe - W7RKN <w7rkn.7@...> wrote:
?
?
Sorry Jim¡.The courts have ruled otherwise.? You are buying a specific amount of ¡®bulk¡¯ insurance, say $500.00¡that is what you are entitled to if there is a loss.? If the item shipped was valued at, say, $354.95 and you bought insurance for $354.95, then *that* is what you would receive in a loss.
?
Joe - W7RKN
?
From: [email protected] [mailto:[email protected]] On Behalf Of Jim VE7RF
Sent: Tuesday, February 13, 2024 2:13 AM
To: [email protected]
Subject: Re: [DRAKE-RADIO] All bent out of shape (3-500z) - now shock sensor value question
?
On Tue, Feb 13, 2024 at 01:57 AM, Joe - W7RKN wrote:
<When we purchase shipping insurance through whomever, they will always tell you to submit an invoice for the product loss.? I tell them, nuts to you¡I paid for 500 dollars of insurance, cut me a check for 500 dollars.? I took UPS to court on <this a number of years ago and won.? Just an FYI!
##? You can't insure it for more than it's worth.?
|
Re: All bent out of shape (3-500z) - now shock sensor value question
Joe Thanks for the reply. I'm going to pick up some 25 and 50g units through Amazon - I don't ship radios much, but the shock sensors seem like an excellent item to have on hand.
Even though I did not have the shock sensors on hand I mailed off the ICOM 706 today to Clairmont Skyland in Gainesville, GA. for repair:? Radio packed in original box with original foam and cardboard supports, original box then surrounded by 1 1/2 inches of hard foam on the sides and 1/2 inch of hard foam top and bottom, inside a second double walled cardboard shipping box securely taped - sent signature required, insured for replacement value and blatantly marked FRAGILE.
It SHOULD make it OK, but as the country song lyrics go: "Man, you just never know...."
- Steve? W7SJT
"Always look for a positive solution then Improvise, Adapt, and Overcome" - Adaptation of the U.S. Marine Corps motto
"There are no rules here!...We're trying to accomplish something!!"
- Thomas Edison
"Success is not final, failure is not fatal.? It is the courage to continue that counts." -?Winston Churchill
?
On Monday, February 12, 2024 at 05:57:16 PM MST, Joe - W7RKN <w7rkn.7@...> wrote:
I use 25g or 50g rated sensors, depending on the weight and value of the package. ? These are the most inexpensive, each, but shipping adds to the cost.
? Amazon has ShockWatch¡.very expensive.
? As does Grainger:
Also expensive.. ? However, they are cheap if they save your shipped product! One more thing, while I am at it: ? When we purchase shipping insurance through whomever, they will always tell you to submit an invoice for the product loss.? I tell them, nuts to you¡I paid for 500 dollars of insurance, cut me a check for 500 dollars.? I took UPS to court on this a number of years ago and won.? Just an FYI! ? Joe ¨C W7RKN ? From: [email protected] [mailto:[email protected]] On Behalf Of Steve Toth via groups.io
Subject: Re: [DRAKE-RADIO] All bent out of shape (3-500z) - now shock sensor value question ? This may be a dumb question, but what is a "typical common sense" value of shock sensor to use when shipping radio equipment?? I have to ship my ICOM 706MKiiG in for repair.
|
Re: FS -- Eimac 3-500Z's (2)
And they are SOLD.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Tuesday, February 13th, 2024 at 3:55 PM, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
Thanks to all for the interest!? The tubes are pending.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, February 12th, 2024 at 2:27 PM, Steve Wedge, W1ES/4 <w1es@...> wrote:
In light of the discussion regarding the shipment of transmitting tubes vs the apes at the shipping companies, I have a pair of Eimac 3-500Z's available for pickup only in the Greensboro/Raleigh-Durham area.? I had these in my L7 recently and wanted to make sure that they were good before offering them.? I had no trouble getting over a kW out of them in my L7.
I don't need two sets of tubes, so I'm offering these at $250 for the pair.? I will meet you within 50 miles or so of my home QTH in Graham, NC.
73,
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
|
Re: FS -- Eimac 3-500Z's (2)
Thanks to all for the interest!? The tubes are pending.
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, February 12th, 2024 at 2:27 PM, Steve Wedge, W1ES/4 <w1es@...> wrote:
In light of the discussion regarding the shipment of transmitting tubes vs the apes at the shipping companies, I have a pair of Eimac 3-500Z's available for pickup only in the Greensboro/Raleigh-Durham area.? I had these in my L7 recently and wanted to make sure that they were good before offering them.? I had no trouble getting over a kW out of them in my L7.
I don't need two sets of tubes, so I'm offering these at $250 for the pair.? I will meet you within 50 miles or so of my home QTH in Graham, NC.
73,
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
|
Re: Another TR7 Journey begins
I think I'm going to do a complete alignment on this rig, throwing ideas at it may cause more harm then good.? Hopefully I can borrow a frequency counter from someone in my club becaue I doubt the counter in my MFJ 259B analyzer is accurate enough LOL.
73, Bill NZ0T
|
Re: All bent out of shape (3-500z) - now shock sensor value question
Sorry Jim¡.The courts have ruled otherwise.? You are buying a specific amount of ¡®bulk¡¯ insurance, say $500.00¡that is what you are entitled to if there is a loss.? If the item shipped was valued at, say, $354.95 and you bought insurance for $354.95, then *that* is what you would receive in a loss. ? Joe - W7RKN ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Jim VE7RF
Sent: Tuesday, February 13, 2024 2:13 AM
To: [email protected]
Subject: Re: [DRAKE-RADIO] All bent out of shape (3-500z) - now shock sensor value question ? On Tue, Feb 13, 2024 at 01:57 AM, Joe - W7RKN wrote: <When we purchase shipping insurance through whomever, they will always tell you to submit an invoice for the product loss.? I tell them, nuts to you¡I paid for 500 dollars of insurance, cut me a check for 500 dollars.? I took UPS to court on <this a number of years ago and won.? Just an FYI! ##? You can't insure it for more than it's worth.?
|
Progress on repairing my RV75 has come to a halt. In attempting to perform the alignment procedure in the Operator¡¯s Manual, I have discovered that the VCXO is not oscillating. The VCXO is a voltage controlled crystal oscillator which uses a varactor diode to ¡°pull¡± a 15.5 MHz crystal oscillator frequency to provide fine tuning for the PLL. Without the signal from this oscillator the PLL will not lock and stabilize the RV75 output frequency.
The VCXO circuitry is somewhat complex and is implemented entirely with discrete components including several semiconductors, a 15.5 MHz crystal, a varactor diode, three variable inductors, and numerous resistors and axial lead ceramic capacitors of the type that were found failed elsewhere on the RF & Analog board. I have visually inspected this circuit under a magnifier and have checked several voltages but have so far not been able to identify a reason why the VCXO is not working. Given the number of components involved and without any clear indication of a component failure, it makes no sense to me to start replacing components, some of which may be available only by salvaging from another RV75 RF & Analog board.
My best current idea for a fix is to send the RV75 off to someone who knows this device far better than I do; apparently wishful thinking on my part as I have been unable to identify someone who both fits this description and is willing to take on this repair. So, for now I will put the RV75 back on the shelf while I turn my attention to other projects and give some background thought to how best to proceed. This is disappointing in that this RV75 is in excellent cosmetic condition, and I have been able to verify that it is apparently working as it should otherwise.
I am still interested in purchasing RV75 repair parts, including a working RF & Analog board, VCXO crystal, VCXO variable inductors, etc. should someone on this forum have these available.
Interesting footnote: An RV75 has been listed on eBay over the last few days for an auction sale, with the auction ending last night. This unit was described as ¡°not working, for parts or repair¡± and appeared to be in very rough cosmetic condition in the single photo posted. I decided to monitor the bidding on this item for the last five minutes of the auction. When I tuned in there were about seven bids, with the highest at $150. From prior experience on eBay I knew that the real bidding excitement would likely come in the last few seconds of the auction. I wasn¡¯t disappointed. In the last three seconds, two bids were posted, one at $450, and the final bid at $477. Madness!
Rick
K8EZB
?
|
Re: All bent out of shape (3-500z) - now shock sensor value question
On Tue, Feb 13, 2024 at 01:57 AM, Joe - W7RKN wrote:
<When we purchase shipping insurance through whomever, they will always tell you to submit an invoice for the product loss.? I tell them, nuts to you¡I paid for 500 dollars of insurance, cut me a check for 500 dollars.? I took UPS to court on <this a number of years ago and won.? Just an FYI!
##? You can't insure it for more than it's worth.?
|
Re: All bent out of shape (3-500z) - now shock sensor value question
I use 25g or 50g rated sensors, depending on the weight and value of the package. ? These are the most inexpensive, each, but shipping adds to the cost.
? Amazon has ShockWatch¡.very expensive.
? As does Grainger:
Also expensive.. ? However, they are cheap if they save your shipped product! One more thing, while I am at it: ? When we purchase shipping insurance through whomever, they will always tell you to submit an invoice for the product loss.? I tell them, nuts to you¡I paid for 500 dollars of insurance, cut me a check for 500 dollars.? I took UPS to court on this a number of years ago and won.? Just an FYI! ? Joe ¨C W7RKN ? From: [email protected] [mailto:[email protected]] On Behalf Of Steve Toth via groups.io
Subject: Re: [DRAKE-RADIO] All bent out of shape (3-500z) - now shock sensor value question ? This may be a dumb question, but what is a "typical common sense" value of shock sensor to use when shipping radio equipment?? I have to ship my ICOM 706MKiiG in for repair.
|
Re: All bent out of shape (3-500z) - now shock sensor value question
This may be a dumb question, but what is a "typical common sense" value of shock sensor to use when shipping radio equipment?? I have to ship my ICOM 706MKiiG in for repair.
Thanks.
- Steve? W7SJT
"Always look for a positive solution then Improvise, Adapt, and Overcome" - Adaptation of the U.S. Marine Corps motto
"There are no rules here!...We're trying to accomplish something!!"
- Thomas Edison
"Success is not final, failure is not fatal.? It is the courage to continue that counts." -?Winston Churchill
?
On Monday, February 12, 2024 at 09:31:26 AM MST, Joe - W7RKN <w7rkn.7@...> wrote:
Shock sensors on and in the shipment would have removed any and all resistance to the claim by FedEx. Anything of value I ship, has shock sensors, inside and outside the box/shipping container.? To prevent the removal of the sensor, I put it on, outline it with a marks-a-lot then tape over it.? Then take a picture of it on the box.? I have had them removed.? The one inside shows what really happened.? I just tell the receiver that if the sensor is missing, video the opening of the carton, *while the delivery person* is still there, making sure he/she is in the vid.? If the inside sensor has been violated, and is missing on the outside of the box, the shipper will cringe at what will happen to them if the claim ever goes to court. ? Joe ¨C W7RKN ? ? As a side note, insurance claims via FedEx for damaged tubes may or may not be honored. ? Why? ?With an amp and some tubes (packed separately, double boxed, well packed) that I sent out, there was damage. ?Come to find out that "what we don't ship" did not exclude vacuum tubes, only x-ray tubes and a few others. ?However, I also found out that vacuum tubes were listed under "what we don't insure", on their website. ?It was a battle and with the support of the shipper, pictures, specs about g forces for the 3-500Z, etc. the insurance claim was finally honored by FedEx. ?
|
Re: Another TR7 Journey begins
The wattmeter circuit is pretty simple. There's not much that can fail. It is essentially the same as a W4. Put your meter on the FWD wattmeter and see if voltage goes up when you transmit power. If you see a sensible increase in voltage suspect the FWD/REF pushbutton or associated wiring. If you don't, meter the high side of pot R2001 on the back side of the Low Pass filter module and do the same. If you don't see voltage check the diodes in the meter circuit (CR2001 and 2002). If the diodes are good check that your transmit output is where it is supposed to be, not oscillating out of band and being absorbed by the low pass filter. You may also have a band switch, T/R relay, or low pass filter issue. The RS cleaner should be OK, but you will want to take precautions to ensure it doesn't spray everywhere. 73 -Jim NU0C On Mon, 12 Feb 2024 11:07:19 -0800 "Bill NZ0T" <nz0tham@...> wrote: [Edited Message Follows]
Hi Jim,
I really appreciate your help.? I was loking at the wrong PDF and the ALC board pic was so blurry I didn't see the label.? I was able to get the voltage down to around 0.5 VDC on a multimeter.? I don't have a VTVM but I'm pretty sure these new meters work OK for this.? The AC control on the ALC board is still extremely touchy and the Forward/Reflected power adjustments do nothing.? In both Forward and Reflected as selected by the pushbotton the panel the meter actually goes below zero.? I was able to get the S-meter set so I know the meter is OK.
So as far as I can tell the ALC is still not working properly.? Still think that control could be the problem.? I do have a can of the old Radio Shack control/contact cleaner and lubricant - wopuld that be OK to use on that control?
73, Bill NZ0T
-- 73 -Jim NU0C
|
In light of the discussion regarding the shipment of transmitting tubes vs the apes at the shipping companies, I have a pair of Eimac 3-500Z's available for pickup only in the Greensboro/Raleigh-Durham area.? I had these in my L7 recently and wanted to make sure that they were good before offering them.? I had no trouble getting over a kW out of them in my L7.
I don't need two sets of tubes, so I'm offering these at $250 for the pair.? I will meet you within 50 miles or so of my home QTH in Graham, NC.
73,
Steve Wedge, W1ES/4
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
|
Re: Another TR7 Journey begins
Hi Jim,
I really appreciate your help.? I was loking at the wrong PDF and the ALC board pic was so blurry I didn't see the label.? I was able to get the voltage down to around 0.5 VDC on a multimeter.? I don't have a VTVM but I'm pretty sure these new meters work OK for this.? The AC control on the ALC board is still extremely touchy and the Forward/Reflected power adjustments do nothing.? In both Forward and Reflected as selected by the pushbotton the panel the meter actually goes below zero.? I was able to get the S-meter set so I know the meter is OK.??
So as far as I can tell the ALC is still not working properly.? Still think that control could be the problem.? I do have a can of the old Radio Shack control/contact cleaner and lubricant - wopuld that be OK to use on that control?
73, Bill NZ0T
|
Re: Another TR7 Journey begins
Look for the High Pass Filter Module schematic, Fig. 2-28. There is a list of illustrations in the front of the SM, page V. Page 2-80 is correct for the 1978 manual that I am looking at. I am aware that different revision manuals may have some slight variations in page numbering. I have no intent of researching that. You have all the information you need to find it. 73, -Jim NU0C On Mon, 12 Feb 2024 09:53:58 -0800 "Dale Parfitt" <PARINC1@...> wrote: Hi Jim,
Page 2-80 is a blank "Notes" page in my original Service manual notebook.
Dale W4OP
|
Re: Another TR7 Journey begins
Hi Jim,
Page 2-80 is a blank "Notes" page in my original Service manual notebook.
Dale W4OP
|
Re: All bent out of shape (3-500z)
The plate structures in all of these type tubes are fairly massive.? It was probably a side acceleration that actually moved it but I'm thinking that the plate "pin" might not be bent.? The plate structure appears to be tightly crimped and/or spot" welded to the pin
If the side acceleration was sufficient to break that spot weld or cause the crimped connection to loosen,? you could probably give it a little acceleration in the other direction to center the plate structure, but it would be forever "loose"?? (hence the "noise)
If it was enough acceleration to actually "bend" the pin, you could probably (carefully) "accelerate" it in the other direction to straighten it.?
It would be worth a try since the tube is now a science project anyway! Not much to lose here. (or "loose",? if you're in Rio Linda!!)
On Sat, Feb 10, 2024 at 07:37 PM, Jim Shorney wrote:
OK guys, have a look at this close-up pic of a 3-500z. This was found in an L7 (not mine). That's not lens distortion or an optical illusion, it really looks like that. makes noise when you pick it up and move it around. This LOOKS like brand new tube. As does its partner. 93xx date codes, paint that looks fresh and not burned. I can't figure how this got out of the factory this way but it doesn't look like shipping damage to me. The wonky tube has a yellow dot sticker on top like someone knew... Wow. The moral of this story is always give unknown tubes a good look before you power them up. I hate to think of what would have happened if I had hit this one with full HV.
--
73
-Jim
NU0C
? --
73/Rick
W4XA
*Every post is created using Linux
|
Jim Shorney
David
