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Possibly Quintron PA? Need help identifying transistors

Tyler- WZ5TX All Messages By This Member #214403 I have this PA and it is labeled “100W PA”. However I cannot find the datasheet for the transistors. Motorola SRF2604. any ideas what the range for this is? drive needed?
Chris Boone WB5ITT All Messages By This Member #214404 Just looking at it, especially the LP filter, I'd say UHF...lots of strip line used Chris WB5ITT toggle quoted message Show quoted text On Mon, Apr 7, 2025, 8:29 PM Tyler- WZ5TX via <wz5tx=[email protected]> wrote: I have this PA and it is labeled “100W PA”. However I cannot find the datasheet for the transistors. Motorola SRF2604. any ideas what the range for this is? drive needed?
Ken Pearce All Messages By This Member #214405 开云体育 Need the part number on the other side. Post a pic of the other side. Looks like a Possible mid band board.? Ken Pearce? N4KCD? Commerce Township, MI toggle quoted message Show quoted text On Apr 7, 2025, at 21:34, Chris Boone WB5ITT via groups.io <setxtelecom@...> wrote: ? Just looking at it, especially the LP filter, I'd say UHF...lots of strip line used Chris WB5ITT On Mon, Apr 7, 2025, 8:29 PM Tyler- WZ5TX via <wz5tx=[email protected]> wrote: I have this PA and it is labeled “100W PA”. However I cannot find the datasheet for the transistors. Motorola SRF2604. any ideas what the range for this is? drive needed? <photo-3.jpg>
Ken Arck AH6LE All Messages By This Member #214406 Quintron QT-6700 (UHF) was 90 watts.I have a spare here and his board looks nothing like the one I have Ken At 06:34 PM 4/7/2025, you wrote: Just looking at it, especially the LP filter, I'd say UHF...lots of strip line used Chris WB5ITT On Mon, Apr 7, 2025, 8:29 PM Tyler- WZ5TX via <wz5tx=[email protected] > wrote: I have this PA and it is labeled ?€?100W PA?€?. However I cannot find the datasheet for the transistors. Motorola SRF2604. any ideas what the range for this is? drive needed? Content-Type: image/jpeg; name="photo-3.jpg" Content-Disposition: inline; filename="photo-3.jpg" Content-ID: <[email protected]> X-Attachment-Id: [email protected] ------------------------------------------------------------------------------ President and CTO - Arcom Controllers Makers of repeater controllers and accessories Phone: (503) 678 6182 Authorized Dealers for Kenwood and Telewave. We offer complete turn-key repeater packages! "We don't just make 'em. We use 'em!"
Ken Pearce All Messages By This Member #214407 开云体育 Ken, You are likely right but if I had the part number off the board I could confirm. There were some 100 watt mid band boards as well. The coils look different from the UHF ones I have here.? Ken Pearce? N4KCD? Commerce Township, MI toggle quoted message Show quoted text On Apr 7, 2025, at 21:49, Ken Arck AH6LE via groups.io <ken@...> wrote: ? Quintron QT-6700 (UHF) was 90 watts.I have a spare here and his board looks nothing like the one I have Ken At 06:34 PM 4/7/2025, you wrote: Just looking at it, especially the LP filter, I'd say UHF...lots of strip line used Chris WB5ITT On Mon, Apr 7, 2025, 8:29 PM Tyler- WZ5TX via <wz5tx=[email protected] > wrote: I have this PA and it is labeled ?€?100W PA?€?. However I cannot find the datasheet for the transistors. Motorola SRF2604. any ideas what the range for this is? drive needed? <27c8c2d.jpg> Content-Type: image/jpeg; name="photo-3.jpg" Content-Disposition: inline; filename="photo-3.jpg" Content-ID: <[email protected]> X-Attachment-Id: [email protected] ------------------------------------------------------------------------------ President and CTO - Arcom Controllers Makers of repeater controllers and accessories Phone: (503) 678 6182 Authorized Dealers for Kenwood and Telewave. We offer complete turn-key repeater packages! "We don't just make 'em. We use 'em!"
Tyler- WZ5TX All Messages By This Member #214415 Here is a pic of the only numbers I see on the board.
Chris Boone WB5ITT All Messages By This Member #214416 Well here's an idea, put 12 volts to it, put a service monitor or signal generator into it, broadband watt meter on the output and sweep it and see where you get a peak in RF out driving it with say +10dbm... Probably won't see a hundred Watts out with that drive but it'll tell you what band it is. "There are always possibilities" Famous Vulcan saying Chris WB5ITT? toggle quoted message Show quoted text On Tue, Apr 8, 2025, 3:14 AM Tyler- WZ5TX via <wz5tx=[email protected]> wrote: Here is a pic of the only numbers I see on the board.
Tyler- WZ5TX All Messages By This Member #214417 开云体育 Good idea! Thanks! WZ5TX David “Tyler” Bufkin toggle quoted message Show quoted text From: [email protected] <[email protected]> on behalf of Chris Boone WB5ITT via groups.io <setxtelecom@...> Sent: Tuesday, April 8, 2025 5:54:35 AM To: [email protected] <[email protected]> Subject: Re: [repeater-builder] Possibly Quintron PA? Need help identifying transistors ? Well here's an idea, put 12 volts to it, put a service monitor or signal generator into it, broadband watt meter on the output and sweep it and see where you get a peak in RF out driving it with say +10dbm... Probably won't see a hundred Watts out with that drive but it'll tell you what band it is. "There are always possibilities" Famous Vulcan saying Chris WB5ITT? On Tue, Apr 8, 2025, 3:14 AM Tyler- WZ5TX via <wz5tx=[email protected]> wrote: Here is a pic of the only numbers I see on the board.
Jeff DePolo WN3A All Messages By This Member #214421 开云体育 Anything with an SRF part number is usually a special-production or binned version of a regular MRF part, but rarely were cross-references (if they existed) published.?? That said, given the amount of inductance in the matching networks, I’d have to think it’s highband or midband. ? ??????????????????????????????????????????????????????????????????????????????????????????????? --- Jeff WN3A ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Tyler- WZ5TX via groups.io Sent: Monday, April 7, 2025 9:29 PM To: [email protected] Subject: [repeater-builder] Possibly Quintron PA? Need help identifying transistors ? I have this PA and it is labeled “100W PA”. However I cannot find the datasheet for the transistors. Motorola SRF2604. any ideas what the range for this is? drive needed?
Joe All Messages By This Member #214422 It definitely looks like a Quintron constructed board.? The white label with the writing on it looks like how they identified boards. The date code may be 1989?? I think that was before they were bought out by Glenayre.? I've worked on several pieces of Quintron/Glenayre equipment but don't remember this board, especially one that had a BNC pigtail on it.? The pigtail looks like it was factory installed and not a modification, unless someone did a nice job of modification. Joe, K1ike
Joe All Messages By This Member #214428 Quintron made a lot of equipment for the 72-75Mhz linking band for paging. Joe, K1ike toggle quoted message Show quoted text On 4/8/2025 9:00 AM, Jeff DePolo WN3A via groups.io wrote: I’d have to think it’s highband or midband.

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