George, My WACOM catalog is #941. I received it, along with Price List #933, in May of 2000. The company was bought by TX-RX several years ago. TX-RX apparently still has some WACOM product in stock, even though the production line is closed. I see that Hamtronics still lists the WP-639 and similar duplexers as a product.
The reference I quoted was only found in the price list dated July 1, 1993, and not in the catalog itself. The term "BpBr" is generally interpreted to mean "Bandpass - Bandreject" which means that both pass and notch functions exist. Normally, that entails a threaded rod to adjust the pass and a variable capacitor to adjust the notch. If there is no notch tuning capacitor (usually a Johansen air variable capacitor with a small brass cap) then perhaps the notch is fixed during manufacture for a fixed split. Indeed, if there is only the one adjustment, then you should tune it as if it were a notch duplexer- tune fr maximum rejection of the opposite frequency, and accept the insertion loss that results. You might contact Len Pringle at Telewave, Inc for tuning advice. Telewave makes a big thing about having a product lineup that duplicates the WACOM offerings. 73, Eric Lemmon WB6FLY wa2vnv wrote: > Eric, tnx for the reply. What year is your catalog, and is Wacom > still in business? I am looking for more specific info (insertion > loss, reject loss, etc) about tuning and setting the offset. It does > not seem to have any way to set the offset without opening up the > cans. > 73's, George WA2VNV > > --- In [email protected], Eric Lemmon <[EMAIL PROTECTED]> > wrote: > > George, > > > > My WACOM catalog lists the WP-698 as a BpBr duplexer for the 1.270- > 1.295 > > GHz band., with a 12 MHz minimum spacing. There is no further info. > > Since it is a BpBr device, I should think that the main tuning rod > sets > > the pass, while the trimmer sets the notch. > > > > 73, Eric Lemmon WB6FLY > > > > wa2vnv wrote: > > > > > Hi all - I'm looking for specs and tuning information on a Wacom > > > WP-698 > > > duplexer. It's a 4 can unit, 2 for Tx, 2 for Rx. Single screw for > > > tuning. What sets the spacing for Pass & Reject. 20 or 12 MHz > > > spacing? > > > Tried the usual searches but don't find any specifics for this > model. > > > Anyone out there got some info? Thanks. > > > George > > > Yahoo! Groups Links > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
