I need a recommendation regarding the correct IF frequency of my Zenith 8-S-154 with chassis no 5801. The schematic has the IF frequency as 456 KC, but the IF cans have the frequency marked as 455 KC. Any suggestion regarding which IF frequency I should tune to? Thanks for your suggestions. Ben

Ben

There is little difference between the two IF Frequencies. IF frequency will determine the station spread on your dial. Don't expect you will notice any difference but I would set them to the schematic if you have a frequency counter.

Standard IF Transformers may be marked 455 but they will adjust far beyond this frequency.

Norm

:I need a recommendation regarding the correct IF frequency of my Zenith 8-S-154 with chassis no 5801. The schematic has the IF frequency as 456 KC, but the IF cans have the frequency marked as 455 KC. Any suggestion regarding which IF frequency I should tune to? Thanks for your suggestions. Ben
:

:
:Ben
:
: There is little difference between the two IF Frequencies. IF frequency will determine the station spread on your dial. Don't expect you will notice any difference but I would set them to the schematic if you have a frequency counter.
:
: Standard IF Transformers may be marked 455 but they will adjust far beyond this frequency.
:
:Norm
:Thanks for the info Norm. I have a frequency counter and will set the IF to 456 KC as the schematic shows. Many thanks again. Ben
:
::I need a recommendation regarding the correct IF frequency of my Zenith 8-S-154 with chassis no 5801. The schematic has the IF frequency as 456 KC, but the IF cans have the frequency marked as 455 KC. Any suggestion regarding which IF frequency I should tune to? Thanks for your suggestions. Ben
::
:
:

::
::Ben
::
:: There is little difference between the two IF Frequencies. IF frequency will determine the station spread on your dial. Don't expect you will notice any difference but I would set them to the schematic if you have a frequency counter.
::
:: Standard IF Transformers may be marked 455 but they will adjust far beyond this frequency.
::
::Norm
::Thanks for the info Norm. I have a frequency counter and will set the IF to 456 KC as the schematic shows. Many thanks again. Ben
::
:::I need a recommendation regarding the correct IF frequency of my Zenith 8-S-154 with chassis no 5801. The schematic has the IF frequency as 456 KC, but the IF cans have the frequency marked as 455 KC. Any suggestion regarding which IF frequency I should tune to? Thanks for your suggestions. Ben

Ben:
For some odd reason, home radios use 455 kHz, autos use 262 kHz, FM uses 10.7 mHz, and the AT&T microwave and aircraft weather radars I am familiar with use 70 mHz. The difference between 455 and 456 is only .2%, so the transformer couldn't really care less which frequency you use, however trying to use such a transformer in an auto with its 262 kHz IF would never work.
Lewis

:I need a recommendation regarding the correct IF frequency of my Zenith 8-S-154 with chassis no 5801. The schematic has the IF frequency as 456 KC, but the IF cans have the frequency marked as 455 KC. Any suggestion regarding which IF frequency I should tune to? Thanks for your suggestions. Ben
:Either 455 or 456 will be ok. Here's what happens: On
455 the image is ON the station frequency. at 456 the image is off by 5kcs.This is so the image DOES NOT fall on the station center frequency. This a pro- blem in bigger cities where there are a lot of sta- tions at the top (high) end of the dial.

:I need a recommendation regarding the correct IF frequency of my Zenith 8-S-154 with chassis no 5801. The schematic has the IF frequency as 456 KC, but the IF cans have the frequency marked as 455 KC. Any suggestion regarding which IF frequency I should tune to? Thanks for your suggestions. Ben
:Either 455 or 456 will be ok. Here's what happens: On
455 the image is ON the station frequency. at 456 the image is off by 5kcs.This is so the image DOES NOT fall on the station center frequency. This a pro- blem in bigger cities where there are a lot of sta- tions at the top (high) end of the dial.

:I need a recommendation regarding the correct IF frequency of my Zenith 8-S-154 with chassis no 5801. The schematic has the IF frequency as 456 KC, but the IF cans have the frequency marked as 455 KC. Any suggestion regarding which IF frequency I should tune to? Thanks for your suggestions. Ben
:Either 455 or 456 will be ok. Here's what happens: On
455 the image is ON the station frequency. at 456 the image is off by 5kcs.This is so the image DOES NOT fall on the station center frequency. This a pro- blem in bigger cities where there are a lot of sta- tions at the top (high) end of the dial.1500-910= 590 k.c.(455*2=910,456*2=912.

:I need a recommendation regarding the correct IF frequency of my Zenith 8-S-154 with chassis no 5801. The schematic has the IF frequency as 456 KC, but the IF cans have the frequency marked as 455 KC. Any suggestion regarding which IF frequency I should tune to? Thanks for your suggestions. Ben
:Either 455 or 456 will be ok. Here's what happens: On
455 the image is ON the station frequency. at 456 the image is off by 5kcs.This is so the image DOES NOT fall on the station center frequency. This a pro- blem in bigger cities where there are a lot of sta- tions at the top (high) end of the dial.1500-910= 590 k.c.(455*2=910,456*2=912.