| WARC |
| WESTCUMB AMATEUR RADIO CLUB |
| Westmorland County, NB & Cumberland County, NS |
Here are a note and some photos received from Lorne, VE1BXK regarding work on the installation of cooling fans on the VE1BHS link radios sent Monday, May 9th, 2011: Hi Guys, I just finished installing the first of two ELK-960 Delay Timers for two Motorola M1225 UHF link radios for VE1BHS repeater. See the attached photos of the install. I am testing the ELK-960 module installation now. I have attached photos of install and interfacing of the ELK-960 to the Motorola M1225 UHF radio J3 accessory jack. All DC (13.8) is fed from the J3 accessory jack M1225 radio for the ELK-960 and the 12 VDC fan. Each link radio at VE1BHS will have this configuration to keep the link radios really COOL and will only activate when the PTT is applied to each individual link radio. I am currently testing the length of time (after PTT) from 1 second to 60 minutes. I found that 30 to 60 seconds run time is sufficient. More "on site" testing will determine the ideal delay time setting. This is how it works. As soon as the PTT from the link radio is present, the fan will start and keep running during the PTT period. When the PTT is no longer present (RX Mode), the fan will keep running the length of time the delay has been set. If the PTT is returns before the fan stops, then the new PTT presence will reset the time delay back to its starting point timer. This is the first attempt to address UHF link radio heat (burning up)related issues at VE1BHS repeater site. Installation of these configurations for VE1BHS repeater site will take place this spring-summer 2011. Here is the vendor information for both the Fan and the Delay timer module. FAN: 12VDC, 92 x 25mm, 50 CFM, Ball Bearing $ 12.30 SKU: CFA129225MB RP Electronics Vancouver BC www.rpelectronics.com Delay Timer Module: ELK-960 $ 29.21 Aartech Canada Oshawa ON www.aartech.ca Any comments welcomed. 73, Lorne VE1BXK |
| VE1BHS Repeater Work 2011 |
| VE1BHS Repeater Work carried out on the 27th of October 2011 by VE1BXK Lorne and VE1ZX Brad with the report written and submitted by VE1BXK Lorne. Thanks Lorne. Click Here for Lorne's report. |