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UHF Cans?

 

Can someone identify these cans? They are 24" tall and
10" in diameter. Both loops have "insertion loss" adjustments
but no marking other than that.

I haven't sweep one yet. Bench is a little full.

Thanks,

Tedd, VE3TJD

UHF cans.jpg

 

They look like the ones used on 900 Mhz paging transmitters. Probably tuned around 928 - 932 Mhz. Will handle a lot of power.

On 10/31/2022 8:21 AM, Tedd Doda wrote:
Can someone identify these cans? They are 24" tall and
10" in diameter. Both loops have "insertion loss" adjustments
but no marking other than that.

I haven't sweep one yet. Bench is a little full.

Thanks,

Tedd, VE3TJD
Jim W7RY
 

They are Telewave VHF pass cans. Most likely from a Telewave VHF transmit combiner.

Most older wide space transmit combiners used simple pass cavities.

73, Jim W7RY

On 10/31/2022 8:21 AM, Tedd Doda wrote:
Can someone identify these cans? They are 24" tall and
10" in diameter. Both loops have "insertion loss" adjustments
but no marking other than that.

I haven't sweep one yet. Bench is a little full.

Thanks,

Tedd, VE3TJD



--
Thanks and 73, Jim W7RY
Jim W7RY
 

Not 900 MHz at 24 inches in length.

Jim W7RY

On 10/31/2022 8:23 AM, Don Clark wrote:
They look like the ones used on 900 Mhz paging transmitters. Probably tuned around 928 - 932 Mhz. Will handle a lot of power.


On 10/31/2022 8:21 AM, Tedd Doda wrote:
Can someone identify these cans? They are 24" tall and
10" in diameter. Both loops have "insertion loss" adjustments
but no marking other than that.

I haven't sweep one yet. Bench is a little full.

Thanks,

Tedd, VE3TJD






--
Thanks and 73, Jim W7RY
 

Can someone identify these cans? They are 24" tall and
10" in diameter.
Telewave pass cavities, could be either VHF or UHF (3/4 wave) depending on which loops are in them.

--- Jeff WN3A




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On 2022-10-31 9:56 a.m., Jeff DePolo WN3A wrote:
Telewave pass cavities, could be either VHF or UHF (3/4 wave)
depending on which loops are in them.

Jeff, I've attached a picture of the loop. From the connector
to the end of the loop is 1.25" and about 1/2" wide.

I've always used Sinclair equipment, so just wondering if
these have any usable value.

Tedd, VE3TJD

Loop.jpg

 

Telewave VHF Bandpass. Nice grab!!!

Jim.

On Oct 31, 2022, at 6:52 AM, Jim W7RY via groups.io <jimw7ry@...> wrote:

?They are Telewave VHF pass cans. Most likely from a Telewave VHF transmit combiner.

Most older wide space transmit combiners used simple pass cavities.

73, Jim W7RY


On 10/31/2022 8:21 AM, Tedd Doda wrote:
Can someone identify these cans? They are 24" tall and
10" in diameter. Both loops have "insertion loss" adjustments
but no marking other than that.

I haven't sweep one yet. Bench is a little full.

Thanks,

Tedd, VE3TJD



--
Thanks and 73, Jim W7RY
 

Jeff, I've attached a picture of the loop. From the connector
to the end of the loop is 1.25" and about 1/2" wide.
Looks small enough to be UHF. I can verify when I get home tonight.

--- Jeff WN3A



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On 2022-10-31 3:10 p.m., Jeff DePolo WN3A wrote:
Looks small enough to be UHF. I can verify when I get home tonight.
That would be great! Thanks Jeff.

Tedd, VE3TJD
 

Looks small enough to be UHF. I can verify when I get home tonight.
That would be great! Thanks Jeff.

Tedd, VE3TJD
Your pic appears to be a UHF loop. Measuring one out of a 10" UHF cavity I have here, from the loop plate to the bottom of the loop is about 1.05" (about 1-1/16"), outside width of the loop is about 0.62" (about 5/8").

If you don't have a use for those, let me know, maybe we can trade for something you need.

--- Jeff WN3A




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