29.620 - (page 2)

The WB4IUY repeater in Zebulon, NC



[bullet]On the distant end (the TX site), the UHF link signal is received via another UHF Motorola Micor with an ARR GaAsFet RX preamp. In the picture to the right, the Micor is the radio on the left and on the bottom. The ARR rx preamp has a red sticker and is located just in front of the Micor. The audio is shaped via homebrew mixer and interfaced to the 10 meter exciter. The exciter is another converted Hygain CB with true FM generated by modulating the VCO. The mixer and exciter are housed in the aluminum enclosure bolted to the top of the Micor. The low level RF stages are modified to run full time for stability, and the 1st rf stage after the tx mixer is buffered and keyed to control the final stages of the TX. Much additional heat-sinking was added, and the transistors in the last 3 stages were replaced to improve duty cycle. The exciter produces about 1 watt into a bandpass filter liberated from a RCA series 700 lowband mobile.

[bullet]The RF then passes through a low-pass filter and into a homebrew solid state intermediate amplifier producing about 15 watts. The intermediate amp is bolted to the top of the aluminum enclosure to the rear, just behind the Motorola remote head. A small muffin fan is attached to it's heatsink for good measure.

[bullet]The output of this stage is fed into an Ameritron AL80B (hollow-state technology!), driving the 3-500 (at 1700 volts) to about 350 watts output. The beautiful glow of the 3-500 can be seen in the photo to the left. This RF passes through a Drake low-pass filter and up to the 10 meter TX antenna.

[bullet]The TX site receives the UHF link signal via another eleven element yagi at about 30 feet. The 10 meter TX antenna is an omni-directional Antron 99 antenna at about 150 feet.

[bullet] Performance for this system was much better than I first expected. Coverage for ground wave 10 watt mobile stations is about 30 miles in all directions, while 100 watt mobiles can work it over 50 miles out. Fixed stations can work it over greater distances, some as far out as 75 miles. I must say I was surprised to find coverage on 10 fm so good. We have a 220 and 440 repeater at the same site, and the 10 meter repeater far exceeds their coverage.



Return to the Repeater Homepage to learn more about the area repeaters listed and described on the TEARA website!.


Click HERE to RETURN to the main TEARA Webpage, or click the floating TEARA watermark on the right!




www.621Cycles.com

East R/C Hobby Shop
Custom CNC Machined Components for the R/C Industry


TEARA SITEMAP: For best site navigation click the Main Website Entry link below, or select items from the menu on the LH side of the page...

Club Stuff...
Main TEARA Website Entry Point   Club Website Main Page   Membership Application   An ARRL Club   Repeater Bulletins   Club Bulletins   Zebulon Site Bulletins   Club Constitution (html)   Club Constitution (txt)k   TEARA Members' Email   VE TEST Schedule Listings for NC   TEARA Members' Websites   Support TEARA   Meeting Site Map   Club Meeting Schedule   Net Information   VE Team Bulletins   Meeting Schedule   TEARA VE Schedule   Ham Radio License Classes   TEARA's VE Team  

Club Handbook Stuff...
Handbook Index   Handbook Preface   Handbook Welcome   Membership Info   Club History   YOUR FIRST TRANSMISSION   USING THE PHONE PATCH   NEW RULES   SPEED DIAL   REVERSE PHONE PATCH  

Packet Stuff...
WB4IUY APRS Digi   K4RTP-8 SEDAN Node in Zebulon   W4RAL-4 BBS Node in Clayton   W4RAL-7 BBS Node in Zebulon   WB4IUY-7 6 Meter BBS Node near Youngsville   Packet Radio Gateway info   TEARa Packet Addresses   Packet Radio Links   W4RAL Packet BBS   DX Cluster Info   APRS Systems   SEDAN Info   Local Packet BBS Nodes   Packet NOS   DX Cluster Links   APRS Links   SEDAN Links   NOS Links   DX Cluster Nodes and Use   APRS Packet Nodes   SEDAN Nodes   NOS Nodes Activity   Using Packet BBS Nodes  

Repeater Stuff...
WA4UQC 147.30 mhz Repeater in Wilson (sk) Pg.1   WA4UQC 147.30 mhz Repeater in Wilson (sk) Pg.2   The Retired WB4IUY 147.39 mhz repeater in Clayton   New 147.39 repeater construction (pg.1)   New 147.39 repeater construction (pg.2)   New 147.39 repeater construction (pg.3)   New 147.39 repeater construction (pg.4)   New 147.39 repeater construction (pg.5)   New 147.39 repeater construction (pg.6)   New 147.39 repeater construction (pg.7)   The NEW WB4IUY 147.39 mhz repeater in Clayton   KD4WIW 224.80 mhz repeater in Zebulon   WB4IUY 29.620 repeater in Zebulon (pg.1)   WB4IUY 29.620 repeater in Zebulon (pg.2)   KD4WIW 442.40 mhz repeater in Zebulon   K4JDR 444.775 repeater in Cary   Repeater Operation Info   Repeater Linking System   Area TEARA & Member Repeaters  

ATV Stuff...
ATV Links   TV Frequency Allocations   SEE YOU ON THE AIR!   ATV Rabbits   2.4 GHz FM ATV   RF Power Table   ATV around central NC  

Club Events...
Bear Wallow Mountain '94   Bear Wallow Mountain '95   Bear Wallow Mountain '96   Field Day Overview   1994 Field Day   1995 Field Day   1996 Field Day   1997 Field Day   1999 Field Day   2000 Field Day   2003 Field Day   2004 Field Day   Special Event Info  

DXing Stuff...
DXing and QSLing Aids   DX Callsign Search Page   US Callsign Search Page   External Callsign Search Engines   KQ4MS Big Gun Party, 1   KQ4MS Big Gun Party, 2   KQ4MS Big Gun Party, 3   KQ4MS Big Gun Party, 4   KQ4MS Big Gun Party, 5   KQ4MS Big Gun Party, 6   KQ4MS Big Gun Party, 7   Propogation Info Page   W4SIS Big Gun Party   W4SIS Big Gun Party, 1   W4SIS Big Gun Party, 2   W4SIS Big Gun Party, 3   W4SIS Big Gun Party, 4   W4SIS Big Gun Party, 5   W4SIS Big Gun Party, 6   W4SIS Big Gun Party, 7   W4SIS Big Gun Party, 8   W4SIS Big Gun Party, 9   W4SIS Big Gun Party, 10   W4SIS Big Gun Party, 11   W4SIS Big Gun Party, 12   W4SIS Big Gun Party, 13   W4SIS Big Gun Party, 14   W4SIS Big Gun Party, 15   VHF / UHF Contests  

General Amateur Radio Stuff...
FCC INFO PAGE   FCC Part 97 Regs  

Shack Stuff...
Ham Radio Software   Ham Radio Software   Downeast Microwave Catalog (txt)   Yagi Design Software  

Misc Stuff...
Home Brewer's Links   Call Sign Servers   CLASSIFIED ADs   Atomic Clock   NC AREA CLUBS   Dealers' Links   Radio Parts and Services   TEARA's Links Catagories   E-Zine Info   Ham Radio Activities   Ham Radio Newsgroups   Ham Radio Reflectors   Resistor Tutorial   Ham Satellites   Spread Spectrum Radio   VHF / Weak Signal Links   Vintage Radio Links  

Supporters of the TEARA Website Costs...
Scootworks - Custom Accessories for Metric Motorcycles   Granucci Motorcycle Saddles   Granucci Motorcycle Saddles   Granucci Motorcycle Saddles   Granucci Motorcycle Saddles   Granucci Motorcycle Saddles   Vulcan Belt Drive Systems   Suzuki Belt Drive Systems   Honda Belt Drive Systems   Belt Drive Systems for Metric Motorcycles   Engine Guard Chaps and Crash Bar Chaps for Metric Motorcycles   Pull back risers for motorcycles   Scootworks Phatrisers for metric motorcycles   Handlebar Risers for metric motorcycles   Lowering Kits for metric motorcycles   Tour Packs and Trunk kits for metric motorcycles   Handlebar mounted beverage and drink holders for metric motorcycles