Search found 18 matches

by Alan87I
Thu Feb 06, 2003 2:42 pm
Forum: General Discussion
Topic: Maxon CP-0520 Radio
Replies: 3
Views: 917

Re: Maxon CP-0520 Radio

Thanks Edd . I just bought it , Word of mouth should have it soon I hope it is crystal controlled , More fun than eproms . I'll check out the link thanks again . Allan
Oh ya by the way passed the Canadian basic ham test a few weeks ago VA2CBE Allan
by Alan87I
Thu Feb 06, 2003 6:28 am
Forum: General Discussion
Topic: Maxon CP-0520 Radio
Replies: 3
Views: 917

Maxon CP-0520 Radio

I;m looking for service info or programming info for this radio It's a hand held UHF . Thanks Allan
by Alan87I
Sun Aug 25, 2002 3:01 pm
Forum: General Discussion
Topic: 70 cm amp
Replies: 0
Views: 841

70 cm amp

Does any one have or know where to get a schematic to build a rf amp section in the UHF range. Also I'm looking for a service manual for a Uniden AMU 150K comercial two channel radio, I'd like to convert it up to the GMRS frequencys . Thanks in advance Allan
by Alan87I
Thu Jul 11, 2002 4:24 am
Forum: General Discussion
Topic: Cordless phone range
Replies: 16
Views: 2843

Re: Cordless phone range

http://www.wilsonelectronics.com/ These folks make a range extender antenna. I have sold a few , They work well with most phones. I have a older phone that works on 54 MHz I believe. I put a BNC connector in the base and run RG 58 to a 4 foot CB antenna on the roof, it better than doubles the range...
by Alan87I
Wed Jul 10, 2002 1:57 am
Forum: General Discussion
Topic: RF Generator
Replies: 2
Views: 939

Re: RF Generator

Thanks Dean . I don't really need a sweeper , Just somthing solid like you mentioned , I Do CB repair as a side line while self studying electronics Both are a hobby Basicly What I earn from repairs and sales goes towards aquiring better equipment. I have an old heath kit tube generator , That thing...
by Alan87I
Tue Jul 09, 2002 4:34 am
Forum: General Discussion
Topic: RF Generator
Replies: 2
Views: 939

RF Generator

I'm looking for a fr generator like a BK 2040, or any thing that will be of good use for aligning CB and 10 meter radio receivers . Thanks Allan
by Alan87I
Wed Apr 17, 2002 4:43 pm
Forum: General Discussion
Topic: Uniden fm radio
Replies: 2
Views: 1056

Uniden fm radio

I have a old uniden AMU 150K mobile radio. I think it was out of a taxi. It is transmitting at 457.xxxx MHz I would like to change the Xtals to work it simplex on 458.6625 MHz . So I can use it with some Gmrs handhelds I have . I'm jumping only around 1 Mhz higher Will the radio need a total RX alig...
by Alan87I
Mon Apr 08, 2002 12:14 pm
Forum: General Discussion
Topic: Crow bar protection , Help
Replies: 2
Views: 1465

Re: Crow bar protection , Help

I tried a 1700 75Vdc it's the only one big enough here on hand . It didn't help . But I have sort of figured out that a M4242 transistor controls the crow bar . It only has voltage on one pin in normal operation. I can't find a referance for this device any where. It's wired to work as a switch with...
by Alan87I
Mon Apr 08, 2002 3:52 am
Forum: General Discussion
Topic: Crow bar protection , Help
Replies: 2
Views: 1465

Crow bar protection , Help

What I'm trying to do is run to identicail power supplies together . I get good results . so far I'm running a amp with them . But when the amp is modulated the current draw is increased from what I can figure it increases to fast causing the crow bar curcuit to shut the supplies down . The supplies...
by Alan87I
Sun Mar 17, 2002 4:22 am
Forum: General Discussion
Topic: Box O Vacume Tubes
Replies: 6
Views: 2943

Re: Box O Vacume Tubes

I bought a box full of tubes once and got burned as well. They were all old pulls. But If any one needs some good tubes check out http://www.fairradio.com/ I bought my last pair for an old amp there , A lot cheaper that other places on the net. They have new and used (pulled and tested ) from old no...
by Alan87I
Sat Mar 09, 2002 4:39 am
Forum: General Discussion
Topic: Hello to the group
Replies: 5
Views: 2001

Re: Hello to the group

For the spectrum analyxer manual keep a saved search for it at ebay, I see manuals selling there for equipment I didn't know existed. <p>CB is starting to go again , Mainly the 10 meter craze , most every 10 meter radio built is capable of 11 meter opp at up to 30 watts power. The FCC doesn't like i...
by Alan87I
Thu Mar 07, 2002 5:12 am
Forum: General Discussion
Topic: Cheap Antenna Solution for FRS walkie talkie
Replies: 5
Views: 2150

Re: Cheap Antenna Solution for FRS walkie talkie

If the TV antenna was modified . Insulate it it from the mast and connect the common lead to the mast and positive conductor to the the antenna. The system would also benifit from the use of a matching network or tuner. MFJ makes some nice units. But the expence would most likely out weigh the gain....
by Alan87I
Wed Mar 06, 2002 4:44 am
Forum: General Discussion
Topic: inverter rfi problems
Replies: 4
Views: 1468

Re: inverter rfi problems

For interferance leaking from the inverter it's self . Try making a cage with strans of copper wire and wood . Similiar to a rabbit cage in design , as long as you keep the wires at least 2" apart. So you will have 2 inch squares, the frequencys that will escape should not affect your radio. Ground ...
by Alan87I
Wed Mar 06, 2002 4:33 am
Forum: General Discussion
Topic: Cheap Antenna Solution for FRS walkie talkie
Replies: 5
Views: 2150

Re: Cheap Antenna Solution for FRS walkie talkie

Those radios work on 462 to 467 MHz . In RF the higher the frequency the shorter the antenna. The length in feet of the radio wave is determinded by dividing 936 by the frequency for a full wave length . this gives roughly 2 feet. In most radio applications antennas are built in either full wave len...
by Alan87I
Sat Feb 23, 2002 3:20 pm
Forum: General Discussion
Topic: Square wave generator
Replies: 0
Views: 1105

Square wave generator

If any one here has the need to own a software controlled square wave generator . up to 9999 Hz
Email for info. Thanks