I have a digital multimeter that does a great job counting low frequencies. It only goes up to 1 mHz, and has the counter function as one of the capabilities. It also will tell me the value of unknown capacitors and inductors, along with all the normal volt, ohm, current multimeter functions. I think the meter puts a known inductor across the unknown capacitor and counts the freq that it oscillates on to determine the capacitance. Likewise it places a known capacitor across an unknown inductor to count the osc freq and determine the value of the inductor, so the freq counter was necessary for those functions.
I have used mine to tune a PL on freq when it was one of the variable type and it worked fine after the adjustment, so I know it is reasonably accurate. 73 - Jim W5ZIT --- On Sat, 7/19/08, Gmail - Kevin, Natalia, Stacey & Rochelle <[EMAIL PROTECTED]> wrote: From: Gmail - Kevin, Natalia, Stacey & Rochelle <[EMAIL PROTECTED]> Subject: [Repeater-Builder] Getting a Freq Counter to Read Lower To: [email protected] Date: Saturday, July 19, 2008, 4:16 AM Hi All, I have a Optoelectronics Handi-Counter Model 2300. I brought it at Dayton in 1995. A great piece of equipment, and I use it alot. Still works fine, except I pulled the NICADs out a few year back, not holding there charge, and never got around to replacing them, works fine from 12v. However I had a need to read the freq of some CTCSS modules, but when I went to use my counter I found that it would only go to 1Mhz. I do not have another counter handy and I understand that I can build a small add-on board to get it to read down below the min reading of the counter. Is a multiplier the correct term? Any ideas on what I can do? If I have to get another counter so be it, but for the number of times I go below 1Mhz I would like to try other ideas first. Thanks Kevin, ZL1KFM. ._,___
