[Repeater-Builder] TAIT T807 power supply repair

2010-03-27 Thread Andreas Papagapiou
Hi all! I'm trying to repair a TAIT T807 power supply. The T4 transformer (115/230V to 18V) was damaged during transport. I had one custom-made, but without the 115V winding. I installed it and along with it replaced C37 which looked ... defective. Now the power supply goes into stand-by mode

[Repeater-Builder] spare parts for TAIT repeater

2010-03-14 Thread Andreas Papagapiou
Hi all! I need a replacement transformer for a power supply used in a TAIT T800 UHF repeater. The part number on the transformer is *T4079.* Checking the power supply schematics and the Web, it seems that this is a mains (115/230V) - 5VA 18V transformer. Does anyone know where I can get a

[Repeater-Builder] 30A power supply suggestion

2009-01-07 Thread Andreas Papagapiou
Hi all and Happy New Year! I'm looking for a power supply for our local repeater. We are currently using a cheap 20A power supply, but I'm worried it may fail under heavy usage and feed our equipment with higher voltage (it happened in the past with a similar power supply which supplied 35V

[Repeater-Builder] info on Kenwood TKR-720

2008-11-24 Thread Andreas Papagapiou
Hi all, Can anyone provide some information on the Kenwood TKR-720 repeater? I checked eham.net but did not find any reviews. What I'd like to know: - Does it have good sensitivity and clear audio? - In general, is it a good repeater? - Can it be easily tuned down to amateur frequencies? - How

[Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software

2008-08-30 Thread Andreas Papagapiou
Hi Ed and group! I have the manuals for T838 PA, T837 Exciter and T835 RX scanned in PDF form. I uploaded them on Rapidshare. You can download them from http://rapidshare.com/files/141353699/TAIT_T800_Manuals.zip.html The file size is around 69MB. Hope they are the ones you are looking for.

[Repeater-Builder] custom duplexer cables

2008-05-20 Thread Andreas Papagapiou
Does anyone know of a company that manufactures good quality custom duplexer cables (for specific frequency and with specific connectors)? We need a set of cables to use with a new Sinclair duplexer and a 2m repeater, N-type connectors on the one site, PLs on the other. thanks, Andreas - 5B8AP

[Repeater-Builder] ID-O-Matic and T800 unit

2008-01-17 Thread Andreas Papagapiou
Hi all, Has anyone interfaced an ID-O-Matic CW IDer to a TAIT T800 repeater? I have the kit ready, but I need instructions for dummies on how to connect it :-) If possible, I'd like to make it polite i.e. transmit the ID every 10 minutes or when the repeater is activated after some time of

[Repeater-Builder] Re: VHF Engineering Tx Help Needed

2007-11-11 Thread Andreas Papagapiou
Hello Doug, I had a similar problem with a VHF Engineering Transmitter-PA. Incoming signals would key the repeater but there was no RF output. First you need to find out if the fault is in the TX or the PA. The output of the TX alone should be 1-1.5W. If that's ok, then you should focus on

[Repeater-Builder] VHF Engineering PA-144 repair

2007-06-02 Thread Andreas Papagapiou
Hello everyone, We have an old repeater made of VHF Engineering kits. The repeater suddently became silent. It seems that there's a problem with the PA module (PA-144). I used a handheld radio to provide 1W input to the PA, but there's no output. Did anyone have a similar problem? Any ideas of