[Repeater-Builder] PA question

I'm using a Motorla Maxtrac for a 2 meter remote base, currently running 40 watts. I have a PA from a Mastr II cont. duty base, that only needs .5 watt for 110 watt output. Anyone know of an easy way to drop the power down on the Maxtrac? These radios wont really go down below 10 watts, and get

[Repeater-Builder] back up battery to repeater power supply.

You first want to check the circuit diagram to see if a paralleled external voltage source (your battery bank) doesn't cause "regulator backfeed" problems in the base/repeater power supply regulator section. Shunt regulators as found in some Motorhead base repeater power supplies (ie MSR-20

[Repeater-Builder] Weiss Demodulator

Hi All I was doing an interface to an old Micro Control Specialties 220 MHz receiver this week and had trouble with the frequency response of the "modified Weiss" demodulator. It appeared to have a 1pole roll off from DC on up. I can get around this problem but I wanted to understand this cir

[Repeater-Builder] Re: desense measurements

Lou, At our club in Sydney Aust we use a bi-directional coupler to do our desensing of our VHF and UHF repeaters. We feed the sig gen to one side of the sample port, which gives us about 20-30dB of isolation from the thru line. So when the TX is turned on it effectivly attenuates the Tx b

Re: [Repeater-Builder] GMRS Repeater Info Wanted

OK I have a set of motorola T5920 Talkabouts that are Both FRS and GMRS.. I wonder If they can be programmed to use the repeater splits. I can hear several GMRS repeaters id,ing but no access..  anyone have any info.. Neal -ka2caf russ wrote: This is well written! You forgot that a base s

Re: [Repeater-Builder] how to reduce voltage output on a MSF5000 power supply?

silicone rectifier diodes will drop the voltage i was thinking 6 tens of a volt each with diode s you can feed the radio the 15.5 and wane the power go's out the battery voltage will take over even if its a volt or two lower relays can be used too ken kb9yku At 07:17 AM 7/12/2004, Ken w

Re: [Repeater-Builder] GMRS Repeater Info Wanted

hey, I see where there is a fixed base repeater and mobile repeater difference. What are the limits on the mobile. If I have like a mobile repeater can I loan to Emeregency Services Units for like a search/resuce scene? thanks --- "Jim B." <[EMAIL PROTECTED]> wrote: > Eric Lemmon wrote: