Picked up one for $10 with bad 1L6. Too cheap to pay big price for tube I used a 1LA6 and mounted the socket for it just above the rectifier. Wired in new socket to the old 1L6 socket and after a recap the radio is playing fine.

:Picked up one for $10 with bad 1L6. Too cheap to pay big price for tube I used a 1LA6 and mounted the socket for it just above the rectifier. Wired in new socket to the old 1L6 socket and after a recap the radio is playing fine.
:
In my Zenith Trans-Oceanic Model H500 I do have a good 1L6 in it. If I want to run it on the broadcast band I exchange the 1L6 with a 1R5, no circuit changes, and it works fine. This helps save the 1L6.
C Harris

Hi

Using a 1R5 in place of 1L6 in a Zenith T/O works well on the broadcast band. Pin #5 is supplied to B+ through a resistor in these Zeniths. Pin #5 of a 1R5 is internally connected to pin #1, B-.

Not the same in all portable radios. Some supply B+ directly to pin #5 of the 1L6. If a 1R5 is inserted into these radio B+ will be Shorted to B-. In these radios pin #5 needs to be removed on the 1R5.

Norm

::Picked up one for $10 with bad 1L6. Too cheap to pay big price for tube I used a 1LA6 and mounted the socket for it just above the rectifier. Wired in new socket to the old 1L6 socket and after a recap the radio is playing fine.
::
:In my Zenith Trans-Oceanic Model H500 I do have a good 1L6 in it. If I want to run it on the broadcast band I exchange the 1L6 with a 1R5, no circuit changes, and it works fine. This helps save the 1L6.
:C Harris
:

:Hi
:
: Using a 1R5 in place of 1L6 in a Zenith T/O works well on the broadcast band. Pin #5 is supplied to B+ through a resistor in these Zeniths. Pin #5 of a 1R5 is internally connected to pin #1, B-.

Thanks for the update Norm. I did know about the pin connection of the 1R5 and the 68K res to pin 5 in my Zenith. I did not realize that other radios did a direct connect B+ to pin 5.
C Harris

: Not the same in all portable radios. Some supply B+ directly to pin #5 of the 1L6. If a 1R5 is inserted into these radio B+ will be Shorted to B-. In these radios pin #5 needs to be removed on the 1R5.
:
:Norm
:
:::Picked up one for $10 with bad 1L6. Too cheap to pay big price for tube I used a 1LA6 and mounted the socket for it just above the rectifier. Wired in new socket to the old 1L6 socket and after a recap the radio is playing fine.
:::
::In my Zenith Trans-Oceanic Model H500 I do have a good 1L6 in it. If I want to run it on the broadcast band I exchange the 1L6 with a 1R5, no circuit changes, and it works fine. This helps save the 1L6.
::C Harris
::
:
:

::Hi
::
:: Using a 1R5 in place of 1L6 in a Zenith T/O works well on the broadcast band. Pin #5 is supplied to B+ through a resistor in these Zeniths. Pin #5 of a 1R5 is internally connected to pin #1, B-.
:
:Thanks for the update Norm. I did know about the pin connection of the 1R5 and the 68K res to pin 5 in my Zenith. I did not realize that other radios did a direct connect B+ to pin 5.
:C Harris
:
:: Not the same in all portable radios. Some supply B+ directly to pin #5 of the 1L6. If a 1R5 is inserted into these radio B+ will be Shorted to B-. In these radios pin #5 needs to be removed on the 1R5.
::
::Norm
::
::::Picked up one for $10 with bad 1L6. Too cheap to pay big price for tube I used a 1LA6 and mounted the socket for it just above the rectifier. Wired in new socket to the old 1L6 socket and after a recap the radio is playing fine.
::::
:::In my Zenith Trans-Oceanic Model H500 I do have a good 1L6 in it. If I want to run it on the broadcast band I exchange the 1L6 with a 1R5, no circuit changes, and it works fine. This helps save the 1L6.
:::C Harris
::: When looking at PADGETTS transoceanic page,he doesn't describe the 1L6 to well. Your posting does a lot more in detail. The reason I watch this site is because I have a ZENITH G503 (something on that order, the one where the dial front cover) flips up & displays a nice dial scale, & turns the the set turns off & on so the battery is not left on accidently. WONDERFUL idea. Too bad ZENITH couldn't come up with this idea long time ago! I REALLY like your description of that circuit. The G503 is just an AM set. Will take your notes seriously & to heart when I work on that set later on.The set worked VERY WELL in the super fringe areas. Then I made a mistake (hopefully not) by making a substitute battery. What I did was to take a HUGE pile of good 9v. batteries & wire them in series to get 90v.,then wire all the positives in parallel & then all the negatives in parallel so I had a seperate 90v.+ & a seperate 90-. for the high voltage. The set worked for a while then the sound started to get weak. Then I put it aside. This was in the mid 70's., haven't tried it since. I had a total of 100 9v.(10 in series & then 10 across in parallel. Then I used 10 9v. in parallel for the filaments. At that time I got the 9v. for free, so no loss there. In the ZENITH book on transoceanic that set was described as LITTERLY reaching out for the WEAKEST stations & it DID EXACTLY THAT! I was impressed because other fringe area sets didn't play very well, even though they were described as being able to do that.
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