Thank you for the comments, all will be accepted. To answer a couple of the questions, at the initial site, this repeater will be the only radio system in place and operating. At the final location, it will be included in a section that maintains other amatuer equipment and commercial public safety equipment operated by our parent organziation (a national SAR organization). Both locations will have backup power and the "supplier" is aware of this.
AS to other items, I will have to double check with the person I have been dealing with at PR about the system. Please feel free to continue to comment about this as all help will make this better in the long run. --- In Repeater-Builder@yahoogroups.com, "Jeff DePolo" <[EMAIL PROTECTED]> wrote: > > I'm not sure if you were looking for constructive criticism or not. If you > were, here's mine. If not, the delete key is within finger's reach... > > > 1 TKR-750 VHF Kenwood Repeater - $1350 > > 1 KPG-91D Repeater Programming Kit - $119 > > 1 TKR-PS1223 Kenwood Internal Power Supply - $169 > > 1 PC24-NN Patch Cable (Repeater TX to Duplexer) - $31.50 > > 1 PC24-NB Patch Cable (Repeater RX to Duplexer) - $26.35 > > 1 PRD-1556 6 Cavity Pass-Reject Duplexer - $1859 > > 1 PC95-400-NN Patch Cable (Duplexer to Polyphaser) - $54 > > 1 IS-50NX-CI Polyphaser (Lighting Protection) - $62 > > 100 feet of LMR-400 Feed Line $82 > > 2 CC4-NM Coax Connector Type N Male - $25 > > 1 ANT150D6-9 VHF 4-Bay Folded Dipole Antenna - $995 > > 1 Setup, programming, and bench testing before shipping - $105 > > My comments would be: > > 1. AVOID the LMR coax!!! 100 feet of 1/2" Heliax with connectors is only > going to cost you maybe $50 more than the prices shown. Feedline is NOT the > place to cut corners. > > 2. I don't know what the PC??-?? patch cables are, but I'm guessing that > they, too, are LMR400 (judging by the PC95-400-NN nomenclature). If that's > the case, upgrade to either double-shielded silver-braid coax (RG142B, > RG214, RG393, RG400), or are solid-shield cables such as Superflex-type > Heliax. For the prices quoted, you could afford to buy the materials AND > crimp tools to make your own RG400 or RG214 cables with silver-plated > gold-pin telfon-dielectric connectors. > > 3. Consider budgeting for an isolator for the transmitter and additional > receiver filtering. A pass/reject duplexer like the Telewave TPRD-1556 does > a great job of protecting your receiver from your own transmitter, but does > very little as far as protecting you from anyone else, or anyone else from > you. Without knowing what the RF landscape is like at your site, it's hard > to say what will be necessary. Maybe nothing if it's a very quiet, isolated > site. Maybe a lot if it's a crowded commercial site. > > 4. I don't see a controller listed? If you intend to use the stock > controller built into the TKR-750, be advised that you will still need a > means of remote control (i.e. a control link above 222 MHz or landline), > which makes an amateur-type controller better suited for the job. > > 5. Not being familiar with the Kenwood power supply, I don't know whether > or not it has provisions for battery backup, but that's something that would > probably be desirable on an ARES/RACES machine. > > I won't comment in detail about the prices other than to say it would be > wise to shop around. > > 73 and good luck on your project. > > --- Jeff >
