Sams PhotoFacts Collection

[Justin B.]

I'd start here and see if this matches: https://www.rigpix.com/cbfreeband/lafayette_hb525a_manual.pdf

It's the owner's manual for the 525A, which happens to have a schematic and alignment info. If that's a match for your radio, then you know which one you've got. If not, you've eliminated yet another possibility.

I was able to find pics of the A, B, and C. The A has no meter and the C front panel is different so mine matches the B model.

So, Dan, I need a 525B manual!

Thanks for the help, TM!

 

[Justin B.]

Ordered one from ManualMan...

 

[Lkaskel]

The following 3 files are for alignment of the Midland 79-983 (hope yours was a typo at 79-839) enjoy....

Hi Dan,
Could you possibly provide the alignment location sheets for the Midland 79-893 from Sams 211 to compliment the alignment directions you have already kindly provided above?
Thank You!!

 

[danmcclain]

Hi Dan,
Could you possibly provide the alignment location sheets for the Midland 79-893 from Sams 211 to compliment the alignment directions you have already kindly provided above?
Thank You!!

Hi Larry.....sorry I'm visiting my brother in Michigan and don't have access to my Sams... Dan

 

[TM86]

Missing 211 here, so I can't offer backup service. Anyone else?

 

[Shummy]

Missing 211 here, so I can't offer backup service. Anyone else?

Thinkin this one... The Midland 79-893

 

[TM86]

Shummy for the win!

 

[danmcclain]

Dan - I have a Sams for the 525F (thank you for that) but this 525 appears to be an older model. I can't find anything on it that specifies which variation it is but it has a smaller meter than the F model and the "delta-tune" is lever operated instead of the usual rotart switch. Another difference is the mic jack is on the front instead of the side.

73,

Justin B.

Hi Justin.....sorry I'm visiting my brother in Michigan and don't have access to my Sams.... Dan

Thinkin this one... The Midland 79-893
View attachment 73020

I appreciate all the backup... Dan

 

[Lkaskel]

Thinkin this one... The Midland 79-893
View attachment 73020

Shummy,
You are "The Man". Thanks so much!!!

BTW, how do you like that Turner Telex mic?

 

[Justin B.]

Hi Justin.....sorry I'm visiting my brother in Michigan and don't have access to my Sams.... Dan

I appreciate all the backup... Dan

Dan, no problemo!

 

[Justin B.]

Would somebody have the "crystal chart" for a Lafayette HB-333? I have a few channels out and I need to figure out what crystals might need attention.

 

[TM86]

Would somebody have the "crystal chart" for a Lafayette HB-333? I have a few channels out and I need to figure out what crystals might need attention.

Straight from Sam's CB-8:
M2 - 4595kc
M3 - 4615kc
M4 - 4625kc
M5 - 4635kc
M6 - 37.600Mc
M7 - 37.650Mc
M8 - 37.700Mc
M9 - 37.750Mc
M10 - 37.800Mc
M11 - 37.850Mc
M12 - 5548kc
M13 - 5545kc
M14 - 5542kc
M15 - 6000kc

 

[danmcclain]

Straight from Sam's CB-8:
M2 - 4595kc
M3 - 4615kc
M4 - 4625kc
M5 - 4635kc
M6 - 37.600Mc
M7 - 37.650Mc
M8 - 37.700Mc
M9 - 37.750Mc
M10 - 37.800Mc
M11 - 37.850Mc
M12 - 5548kc
M13 - 5545kc
M14 - 5542kc
M15 - 6000kc

Thanks for the help....I'm still out of town and won't be back till the 22nd of June. Dan

 

[Justin B.]

TM - Thanks for that but I'm looking for the chart that equates channel and crystal combination.

 

[TM86]

TM - Thanks for that but I'm looking for the chart that equates channel and crystal combination.

Yeah, that's not in the Sam's. Which means we have to use math, darn it.

The M15 6000 kc (6 Mhz) xtal is used to generate your TX signal by mixing with one of the 4xxx kc (4.xxx Mhz) and one of the 37/38 Mc (MHz) xtals. Quick look the frequencies involved allows for a guess that we're probably going be subtracting the 4 and 6 Mhz signals from the 37 Mhz ones.

We already know 6 Mhz is always there in TX. So let's grab the frequency of M5, 4.635 Mhz, and add it to the 6.000 MHz so we only have to do one subtraction at the end. 6.000 + 4.635 = 10.635.

Now, grabbing the frequency of M6, 37.600 Mhz, we can subtract the number we just got from the prior addition operation above. 37.600 - 10.635 = 26.965

And 26.965 MHz is the frequency of channel 1.

As a formula it would look something like this:
Xtal1 - ( 6.000 Mhz + Xtal2) = operating frequency

M12, M13, and M14 are only used on receive. M13 provides the basic 455 kHz for the receive IF, with M12 and M14 being slightly offset higher and lower to provide the delta tune function.

If you get a number that can't possibly exist in your radio, like 27.245, that just means the crystals can do it but you don't have a channel selector position for that channel.

Hopefully that makes sense. I'm running on about 2 hours of sleep today. But I think with the information provided you should be able to generate your own xtal chart.